InChI=1S/C33H52O7/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(13-15-32(20,4)25(22)14-16-33(23,24)5)39-31-28(36)26(34)27(35)29(40-31)30(37)38/h9-10,18-19,21,23-29,31,34-36H,6-8,11-17H2,1-5H3,(H,37,38)/t19?,21?,23?,24-,25-,26?,27?,28?,29?,31?,32-,33+/m0/s1