InChI=1S/C27H32O8/c1-23(2)20(28)13-21(29)25(4)26(23,31)11-10-24(3)27(25,32)14-17-19(35-24)12-18(34-22(17)30)15-6-8-16(33-5)9-7-15/h6-9,12,21,29,31-32H,10-11,13-14H2,1-5H3/t21-,24-,25+,26-,27-/m1/s1