InChI=1S/C20H32O/c1-17(2)14-5-8-20-10-13-12(19(13,4)11-20)9-15(20)18(14,3)7-6-16(17)21/h12-16,21H,5-11H2,1-4H3/t12-,13?,14?,15?,16+,18+,19-,20?/m0/s1