InChI=1S/C20H28O3/c1-6-20(4)11-15(22)16-12-8-7-9-19(2,3)13(12)10-14(21)17(16)18(20)23-5/h6,10,15,18,21-22H,1,7-9,11H2,2-5H3/t15-,18+,20-/m0/s1