InChI=1S/C27H28O11/c1-12(5-7-15-22(31)21-17(11-36-25(21)32)13(2)23(15)35-4)6-8-19(30)37-24-16-9-14(28)10-18(29)20(16)26(33)38-27(24,3)34/h5,9-10,24,28-29,31,34H,6-8,11H2,1-4H3/b12-5+