InChI=1S/C20H28O5/c1-10-6-20-7-11(10)4-5-13(20)18(2)8-12(21)9-19(3,17(24)25)15(18)14(20)16(22)23/h11-15,21H,1,4-9H2,2-3H3,(H,22,23)(H,24,25)