InChI=1S/C25H36O4/c1-16(2)10-8-11-17(3)12-9-13-18(4)14-15-25(7)20(6)21(24(28)29)22(26)19(5)23(25)27/h10,12,14,26H,8-9,11,13,15H2,1-7H3,(H,28,29)/p-2/b17-12+,18-14+/t25-/m1/s1