InChI=1S/C25H28O6/c1-13(2)7-9-15-17(29-5)11-19-22(24(15)27)25(28)21-16(10-8-14(3)4)23(26)20(30-6)12-18(21)31-19/h7-8,11-12,26-27H,9-10H2,1-6H3