InChI=1S/C31H44O2/c1-23(2)11-12-24(3)13-14-25(4)15-16-26(5)17-18-27(6)19-20-28(7)21-22-29-9-8-10-30(32)31(29)33/h8-11,13,15,17,19,21,32-33H,12,14,16,18,20,22H2,1-7H3/b24-13+,25-15+,26-17+,27-19+,28-21+