InChI=1/C21H19N3O5/c25-20(12-22-18-10-8-15(24(27)28)11-19(18)29-21(22)26)23(14-6-7-14)17-9-5-13-3-1-2-4-16(13)17/h1-4,8,10-11,14,17H,5-7,9,12H2/t17-/m1/s1 B91D051D218BAA76