InChI=1S/C28H34O9/c1-14(29)34-19-12-20(31)36-24(2,3)17-11-18(30)27(6)16(26(17,19)5)7-9-25(4)21(15-8-10-33-13-15)35-23(32)22-28(25,27)37-22/h8,10,13,16-17,19,21-22H,7,9,11-12H2,1-6H3