InChI=1S/C20H30O4/c1-12(2)13-11-20(24)9-6-15-18(3,16(20)10-14(13)21)7-5-8-19(15,4)17(22)23/h11-12,15-16,24H,5-10H2,1-4H3,(H,22,23)