InChI=1S/C24H34O4/c1-21-7-4-13(26)12-24(21,28)17-10-14(17)19-16(21)5-8-22(2)20(19)15-11-18(15)23(22,27)6-3-9-25/h13-20,25-28H,4-5,7-12H2,1-2H3