InChI=1S/C20H22N2O10/c1-9-6-11(29-3)7-12(25)15(9)19(27)32-16-13(8-23)31-18(17(16)30-10(2)24)22-5-4-14(26)21-20(22)28/h4-7,13,16-18,23,25H,8H2,1-3H3,(H,21,26,28)/t13-,16-,17-,18-/m1/s1