InChI=1S/C22H34O2/c1-6-7-8-12-19-15-21(23)20(22(16-19)24-5)14-13-18(4)11-9-10-17(2)3/h10,13,15-16,23H,6-9,11-12,14H2,1-5H3/b18-13+