InChI=1S/C30H42O/c1-23(2)13-11-16-24(3)14-9-10-15-25(4)17-12-18-26(5)19-20-29-27(6)21-28(31)22-30(29,7)8/h9-20,28,31H,21-22H2,1-8H3/b10-9+,16-11+,17-12+,20-19+,24-14+,25-15+,26-18+/t28-/m1/s1