InChI=1S/C19H26O3/c1-3-4-5-6-7-9-12-15-19(21)16-13-10-8-11-14-17-22-18(2)20/h11-12,14-15,19,21H,3-7,9,17H2,1-2H3/b14-11-,15-12+