InChI=1S/C27H42O/c1-17(2)18(3)6-7-19(4)25-12-13-26-24-10-8-20-16-21(28)9-11-22(20)23(24)14-15-27(25,26)5/h8,10,17-19,21,25-26,28H,6-7,9,11-16H2,1-5H3/t18-,19+,21-,25?,26-,27+/m0/s1