InChI=1S/C31H50O2/c1-18-19(2)21-12-16-29(7)22(26(21)31(9,33)20(18)3)10-11-24-28(6)15-14-25(32)27(4,5)23(28)13-17-30(24,29)8/h10-11,18-21,23-25,32-33H,12-17H2,1-9H3/t18-,19+,20+,21?,23?,24?,25?,28-,29+,30+,31+/m0/s1