InChI=1S/C19H28O3/c1-18-6-5-15-14(16(18)8-13(21)10-18)4-3-11-7-12(20)9-17(22)19(11,15)2/h9,11,13-16,20-21H,3-8,10H2,1-2H3/t11?,13-,14+,15-,16-,18+,19-/m0/s1