InChI=1S/C21H32O3/c1-15-7-10-18-20(2,3)11-6-12-21(18,4)17(15)9-8-16(14-22)13-19(23)24-5/h7,10,13,17-18,22H,1,6,8-9,11-12,14H2,2-5H3/b16-13+/t17-,18-,21+/m1/s1