NP-MRD: Showing NP-Card for 7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid (NP0225757)

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Record Information

Version

2.0

Created at

2022-09-06 04:34:42 UTC

Updated at

2022-09-06 04:34:43 UTC

NP-MRD ID

NP0225757

Secondary Accession Numbers

None

Natural Product Identification

Common Name

7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid

Description

7-(6,8-Dihydroxy-1-oxo-3,4-dihydro-1H-2-benzopyran-3-yl)heptanoic acid belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups. Based on a literature review very few articles have been published on 7-(6,8-dihydroxy-1-oxo-3,4-dihydro-1H-2-benzopyran-3-yl)heptanoic acid.

Structure

MOL 3D MOL SDF PDB SMILES InChI

     RDKit          3D

 42 43  0  0  0  0  0  0  0  0999 V2000
    7.1397   -0.5104   -0.2452 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.4699   -0.2339   -1.2658 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.0530    0.2930   -2.3793 O   0  0  0  0  0  0  0  0  0  0  0  0
    5.0110   -0.4895   -1.2519 C   0  0  0  0  0  0  0  0  0  0  0  0
    4.3823    0.6598   -0.4698 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8859    0.5322   -0.3722 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.5137   -0.7515    0.3268 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.0241   -0.9156    0.4474 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.3869    0.2077    1.2343 C   0  0  0  0  0  0  0  0  0  0  0  0
   -1.0991    0.0248    1.3457 C   0  0  2  0  0  0  0  0  0  0  0  0
   -1.6800    0.0068   -0.0490 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.1612    0.1409   -0.0249 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.8421   -0.3181   -1.1595 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.2142   -0.1920   -1.1312 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.9791   -0.6207   -2.2145 O   0  0  0  0  0  0  0  0  0  0  0  0
   -5.8886    0.3504   -0.0590 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.1914    0.7917    1.0397 C   0  0  0  0  0  0  0  0  0  0  0  0
   -5.7834    1.3485    2.1589 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.8027    0.6834    1.0535 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.0301    1.1419    2.2021 C   0  0  0  0  0  0  0  0  0  0  0  0
   -3.6524    1.6408    3.1876 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.6562    1.0082    2.1559 O   0  0  0  0  0  0  0  0  0  0  0  0
    7.8595    0.8966   -2.3840 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.6109   -0.5300   -2.2763 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.8620   -1.4631   -0.7201 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.7849    0.7112    0.5580 H   0  0  0  0  0  0  0  0  0  0  0  0
    4.6950    1.5937   -0.9738 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.5316    1.3661    0.2604 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.3910    0.6394   -1.3595 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.9513   -0.7077    1.3452 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.8845   -1.6222   -0.2576 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.5572   -0.9632   -0.5666 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.8200   -1.8631    0.9716 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.5577    1.1965    0.7494 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.8235    0.2537    2.2489 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.2752   -0.9586    1.8612 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.2150    0.7415   -0.7142 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4771   -1.0036   -0.4722 H   0  0  0  0  0  0  0  0  0  0  0  0
   -3.3047   -0.7425   -1.9970 H   0  0  0  0  0  0  0  0  0  0  0  0
   -6.2094   -0.0039   -2.9863 H   0  0  0  0  0  0  0  0  0  0  0  0
   -6.9626    0.4436   -0.0504 H   0  0  0  0  0  0  0  0  0  0  0  0
   -6.7711    1.4635    2.2336 H   0  0  0  0  0  0  0  0  0  0  0  0
  3  2  1  0
  2  1  2  0
  2  4  1  0
  4  5  1  0
  5  6  1  0
  6  7  1  0
  7  8  1  0
  8  9  1  0
  9 10  1  0
 10 11  1  0
 11 12  1  0
 12 13  2  0
 13 14  1  0
 14 15  1  0
 14 16  2  0
 16 17  1  0
 17 18  1  0
 17 19  2  0
 19 20  1  0
 20 21  2  0
 20 22  1  0
 22 10  1  0
 19 12  1  0
  3 23  1  0
  4 24  1  0
  4 25  1  0
  5 26  1  0
  5 27  1  0
  6 28  1  0
  6 29  1  0
  7 30  1  0
  7 31  1  0
  8 32  1  0
  8 33  1  0
  9 34  1  0
  9 35  1  0
 10 36  1  1
 11 37  1  0
 11 38  1  0
 13 39  1  0
 15 40  1  0
 16 41  1  0
 18 42  1  0
M  END


  Mrv1652309062206342D          

 22 23  0  0  0  0            999 V2000
    2.8579   -6.6000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -6.1875    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    3.5724   -5.3625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.2868   -6.6000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.0013   -6.1875    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.7158   -6.6000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.4302   -6.1875    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.1447   -6.6000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.8592   -6.1875    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.5737   -6.6000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    9.2881   -6.1875    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   10.0026   -6.6000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   10.7171   -6.1875    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   11.4315   -6.6000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   12.1460   -6.1875    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   11.4315   -7.4250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   10.7171   -7.8375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
   10.7171   -8.6625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
   10.0026   -7.4250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    9.2881   -7.8375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    9.2881   -8.6625    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    8.5737   -7.4250    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
  2  3  1  0  0  0  0
  2  4  1  0  0  0  0
  4  5  1  0  0  0  0
  5  6  1  0  0  0  0
  6  7  1  0  0  0  0
  7  8  1  0  0  0  0
  8  9  1  0  0  0  0
  9 10  1  0  0  0  0
 10 11  1  0  0  0  0
 11 12  1  0  0  0  0
 12 13  2  0  0  0  0
 13 14  1  0  0  0  0
 14 15  1  0  0  0  0
 14 16  2  0  0  0  0
 16 17  1  0  0  0  0
 17 18  1  0  0  0  0
 17 19  2  0  0  0  0
 12 19  1  0  0  0  0
 19 20  1  0  0  0  0
 20 21  2  0  0  0  0
 20 22  1  0  0  0  0
 10 22  1  0  0  0  0
M  END
> <DATABASE_ID>
NP0225757

> <DATABASE_NAME>
NP-MRD

> <SMILES>
OC(=O)CCCCCCC1CC2=CC(O)=CC(O)=C2C(=O)O1

> <INCHI_IDENTIFIER>
InChI=1S/C16H20O6/c17-11-7-10-8-12(5-3-1-2-4-6-14(19)20)22-16(21)15(10)13(18)9-11/h7,9,12,17-18H,1-6,8H2,(H,19,20)

> <INCHI_KEY>
QWFOXNSUIHWDNJ-UHFFFAOYSA-N

> <FORMULA>
C16H20O6

> <MOLECULAR_WEIGHT>
308.33

> <EXACT_MASS>
308.125988364

> <JCHEM_ACCEPTOR_COUNT>
5

> <JCHEM_ATOM_COUNT>
42

> <JCHEM_AVERAGE_POLARIZABILITY>
32.764444804587484

> <JCHEM_BIOAVAILABILITY>
1

> <JCHEM_DONOR_COUNT>
3

> <JCHEM_FORMAL_CHARGE>
0

> <JCHEM_GHOSE_FILTER>
1

> <JCHEM_IUPAC>
7-(6,8-dihydroxy-1-oxo-3,4-dihydro-1H-2-benzopyran-3-yl)heptanoic acid

> <JCHEM_LOGP>
3.7011796226666664

> <JCHEM_MDDR_LIKE_RULE>
0

> <JCHEM_NUMBER_OF_RINGS>
2

> <JCHEM_PHYSIOLOGICAL_CHARGE>
-1

> <JCHEM_PKA>
8.509703443184282

> <JCHEM_PKA_STRONGEST_ACIDIC>
4.4820779688347905

> <JCHEM_PKA_STRONGEST_BASIC>
-4.010518896787194

> <JCHEM_POLAR_SURFACE_AREA>
104.06000000000002

> <JCHEM_REFRACTIVITY>
78.96789999999997

> <JCHEM_ROTATABLE_BOND_COUNT>
7

> <JCHEM_RULE_OF_FIVE>
1

> <JCHEM_TRADITIONAL_IUPAC>
7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid

> <JCHEM_VEBER_RULE>
0

$$$$

HEADER    PROTEIN                                 06-SEP-22   NONE
TITLE     NULL                                                        
COMPND    NULL                                                        
SOURCE    NULL                                                        
KEYWDS    NULL                                                        
EXPDTA    NULL                                                        
AUTHOR    Marvin                                                      
REVDAT   1   06-SEP-22         0                                  
HETATM    1  O   UNK     0       5.335 -12.320   0.000  0.00  0.00           O+0
HETATM    2  C   UNK     0       6.668 -11.550   0.000  0.00  0.00           C+0
HETATM    3  O   UNK     0       6.668 -10.010   0.000  0.00  0.00           O+0
HETATM    4  C   UNK     0       8.002 -12.320   0.000  0.00  0.00           C+0
HETATM    5  C   UNK     0       9.336 -11.550   0.000  0.00  0.00           C+0
HETATM    6  C   UNK     0      10.669 -12.320   0.000  0.00  0.00           C+0
HETATM    7  C   UNK     0      12.003 -11.550   0.000  0.00  0.00           C+0
HETATM    8  C   UNK     0      13.337 -12.320   0.000  0.00  0.00           C+0
HETATM    9  C   UNK     0      14.670 -11.550   0.000  0.00  0.00           C+0
HETATM   10  C   UNK     0      16.004 -12.320   0.000  0.00  0.00           C+0
HETATM   11  C   UNK     0      17.338 -11.550   0.000  0.00  0.00           C+0
HETATM   12  C   UNK     0      18.672 -12.320   0.000  0.00  0.00           C+0
HETATM   13  C   UNK     0      20.005 -11.550   0.000  0.00  0.00           C+0
HETATM   14  C   UNK     0      21.339 -12.320   0.000  0.00  0.00           C+0
HETATM   15  O   UNK     0      22.673 -11.550   0.000  0.00  0.00           O+0
HETATM   16  C   UNK     0      21.339 -13.860   0.000  0.00  0.00           C+0
HETATM   17  C   UNK     0      20.005 -14.630   0.000  0.00  0.00           C+0
HETATM   18  O   UNK     0      20.005 -16.170   0.000  0.00  0.00           O+0
HETATM   19  C   UNK     0      18.672 -13.860   0.000  0.00  0.00           C+0
HETATM   20  C   UNK     0      17.338 -14.630   0.000  0.00  0.00           C+0
HETATM   21  O   UNK     0      17.338 -16.170   0.000  0.00  0.00           O+0
HETATM   22  O   UNK     0      16.004 -13.860   0.000  0.00  0.00           O+0
CONECT    1    2                                                            
CONECT    2    1    3    4                                                  
CONECT    3    2                                                            
CONECT    4    2    5                                                       
CONECT    5    4    6                                                       
CONECT    6    5    7                                                       
CONECT    7    6    8                                                       
CONECT    8    7    9                                                       
CONECT    9    8   10                                                       
CONECT   10    9   11   22                                                  
CONECT   11   10   12                                                       
CONECT   12   11   13   19                                                  
CONECT   13   12   14                                                       
CONECT   14   13   15   16                                                  
CONECT   15   14                                                            
CONECT   16   14   17                                                       
CONECT   17   16   18   19                                                  
CONECT   18   17                                                            
CONECT   19   17   12   20                                                  
CONECT   20   19   21   22                                                  
CONECT   21   20                                                            
CONECT   22   20   10                                                       
MASTER        0    0    0    0    0    0    0    0   22    0   46    0
END

View in JSmol

Synonyms

Value	Source
7-(6,8-Dihydroxy-1-oxo-3,4-dihydro-1H-2-benzopyran-3-yl)heptanoate	Generator

Chemical Formula

C₁₆H₂₀O₆

Average Mass

308.3300 Da

Monoisotopic Mass

308.12599 Da

IUPAC Name

7-(6,8-dihydroxy-1-oxo-3,4-dihydro-1H-2-benzopyran-3-yl)heptanoic acid

Traditional Name

7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid

CAS Registry Number

Not Available

SMILES

OC(=O)CCCCCCC1CC2=CC(O)=CC(O)=C2C(=O)O1

InChI Identifier

InChI=1S/C16H20O6/c17-11-7-10-8-12(5-3-1-2-4-6-14(19)20)22-16(21)15(10)13(18)9-11/h7,9,12,17-18H,1-6,8H2,(H,19,20)

InChI Key

QWFOXNSUIHWDNJ-UHFFFAOYSA-N

Experimental Spectra

Not Available

Predicted Spectra

Spectrum Type	Description	Depositor ID	Depositor Organization	Depositor	Deposition Date	View
1D NMR	¹³C NMR Spectrum (1D, 25 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 100 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 252 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 1000 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 50 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 200 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 75 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 300 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 101 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 400 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 126 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 500 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 151 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 600 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 176 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 700 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 201 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 800 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹³C NMR Spectrum (1D, 226 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum
1D NMR	¹H NMR Spectrum (1D, 900 MHz, H₂O, predicted)	Wishart Lab	Wishart Lab	David Wishart	2021-06-20	View Spectrum

Chemical Shift Submissions

Not Available

Species

Species of Origin

Not Available

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups.

Kingdom

Organic compounds

Super Class

Benzenoids

Class

Benzene and substituted derivatives

Sub Class

Benzoic acids and derivatives

Direct Parent

Hydroxybenzoic acid derivatives

Alternative Parents

Substituents

Dihydroxybenzoic acid
2-benzopyran
Isochromane
Benzopyran
Medium-chain fatty acid
1-hydroxy-4-unsubstituted benzenoid
1-hydroxy-2-unsubstituted benzenoid
Hydroxy fatty acid
Heterocyclic fatty acid
Fatty acyl
Fatty acid
Dicarboxylic acid or derivatives
Vinylogous acid
Lactone
Carboxylic acid ester
Oxacycle
Organoheterocyclic compound
Carboxylic acid
Carboxylic acid derivative
Organic oxygen compound
Organic oxide
Hydrocarbon derivative
Organooxygen compound
Carbonyl group
Aromatic heteropolycyclic compound

Molecular Framework

Aromatic heteropolycyclic compounds

External Descriptors

Not Available

Physical Properties

State

Not Available

Experimental Properties

Property	Value	Reference
Melting Point	Not Available	Not Available
Boiling Point	Not Available	Not Available
Water Solubility	Not Available	Not Available
LogP	Not Available	Not Available

Predicted Properties

Property	Value	Source
logP	3.7	ChemAxon
pKa (Strongest Acidic)	4.48	ChemAxon
pKa (Strongest Basic)	-4	ChemAxon
Physiological Charge	-1	ChemAxon
Hydrogen Acceptor Count	5	ChemAxon
Hydrogen Donor Count	3	ChemAxon
Polar Surface Area	104.06 Å²	ChemAxon
Rotatable Bond Count	7	ChemAxon
Refractivity	78.97 m³·mol⁻¹	ChemAxon
Polarizability	32.76 Å³	ChemAxon
Number of Rings	2	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	Yes	ChemAxon
Veber's Rule	No	ChemAxon
MDDR-like Rule	No	ChemAxon

External Links

HMDB ID

Not Available

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FoodDB ID

Not Available

KNApSAcK ID

Not Available

Chemspider ID

Not Available

KEGG Compound ID

Not Available

BioCyc ID

Not Available

BiGG ID

Not Available

Wikipedia Link

Not Available

METLIN ID

Not Available

PubChem Compound

163048040

PDB ID

Not Available

ChEBI ID

Not Available

Good Scents ID

Not Available

References

General References

LOTUS database [Link]

Showing NP-Card for 7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid (NP0225757)

MOL for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

3D MOL for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

3D SDF for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

3D-SDF for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

PDB for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

3D PDB for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

SMILES for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

INCHI for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

Structure for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)

3D Structure for NP0225757 (7-(6,8-dihydroxy-1-oxo-3,4-dihydro-2-benzopyran-3-yl)heptanoic acid)