InChI=1S/C27H36O2/c1-21(11-7-8-12-22(2)15-10-18-28)13-9-14-23(3)16-17-26-24(4)19-25(29)20-27(26,5)6/h7-18,25,29H,19-20H2,1-6H3/b8-7+,13-9+,15-10+,17-16+,21-11+,22-12+,23-14+