InChI=1S/C23H22O7/c1-23(2)6-5-11-15(30-23)8-13(24)20-21(25)19-12-7-16(26-3)17(27-4)9-14(12)28-10-18(19)29-22(11)20/h5-9,18-19,24H,10H2,1-4H3/t18-,19+/m1/s1