InChI=1S/C33H52O9/c1-18-8-12-22(34)17-21(18)11-10-20-7-6-16-33(5)23(13-14-24(20)33)19(2)9-15-25(32(3,4)40)41-31-28(37)26(35)27(36)29(42-31)30(38)39/h10-11,19,22-29,31,34-37,40H,1,6-9,12-17H2,2-5H3,(H,38,39)/b20-10+,21-11-/t19?,22?,23?,24-,25?,26?,27?,28?,29?,31?,33+/m0/s1