InChI=1S/C19H28O3/c1-18-9-7-12-11-5-6-16(20)17(21)14(11)4-3-13(12)15(18)8-10-19(18,2)22/h11-13,15,21-22H,3-10H2,1-2H3/t11-,12-,13-,15+,18+,19+/m1/s1