InChI=1S/C20H30O4/c1-11-9-20-10-12(11)5-6-13(20)18(2)7-4-8-19(3,17(23)24)15(18)14(21)16(20)22/h12-16,21-22H,1,4-10H2,2-3H3,(H,23,24)