InChI=1S/C19H28O3/c1-5-6-12-9-15(20)17-13-11-19(4,22-16(17)10-12)8-7-14(13)18(2,3)21/h9-10,13-14,20-21H,5-8,11H2,1-4H3/t13-,14-,19-/m1/s1