InChI=1S/C20H22O5/c1-12(2)3-6-14-10-16(18(23)11-17(14)22)20(25)19(24)9-13-4-7-15(21)8-5-13/h3-5,7-8,10-11,19,21-24H,6,9H2,1-2H3/t19-/m0/s1