InChI=1S/C21H26N2O10/c1-8-4-5-10(17(27)28)11(6-8)16-22-20(31)21(3,23-16)9(2)7-32-19-14(26)12(24)13(25)15(33-19)18(29)30/h4-6,9,12-15,19,24-26H,7H2,1-3H3,(H,27,28)(H,29,30)(H,22,23,31)