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