InChI=1/C17H26O3/c1-4-6-7-8-9-12-16(19)13-10-11-14-17(5-2)20-15(3)18/h5,9-14,16-17,19H,2,4,6-8H2,1,3H3/b12-9-,13-10?,14-11?/t16-,17+/s2