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