InChI=1S/C20H30O2/c1-12(2)15-8-13-6-7-18-19(3,4)10-14(21)11-20(18,5)16(13)9-17(15)22/h8-9,12,14,18,21-22H,6-7,10-11H2,1-5H3/t14?,18?,20-/m1/s1