InChI=1S/C27H40O2/c1-20(2)10-7-11-21(3)12-8-13-22(4)14-9-16-27(6)17-15-24-19-25(28)18-23(5)26(24)29-27/h10,12,14,18-19,28H,7-9,11,13,15-17H2,1-6H3/b21-12+,22-14+