InChI=1S/C25H44/c1-9-22(6)16-18-25(24(8)15-11-13-21(4)5)19-17-23(7)14-10-12-20(2)3/h9,12,17-18,21-22,24H,1,10-11,13-16,19H2,2-8H3/b23-17+,25-18+