InChI=1S/C24H24O7/c1-3-29-23(27)19-20(24(28)30-4-2)22-18(14-7-11-16(26)12-8-14)17(21(19)31-22)13-5-9-15(25)10-6-13/h5-12,19-22,25-26H,3-4H2,1-2H3/t19-,20+,21-,22+