InChI=1/C20H28O3/c1-4-12-20(13-5-2)14-17(21)18(19(22)23-20)16(6-3)15-10-8-7-9-11-15/h7-11,16,18H,4-6,12-14H2,1-3H3/t16-,18+/m1/s1 CCFE0DBB866FC937