InChI=1/C21H19N3O7/c1-11(2)20-21(27)23(15-5-4-13(24(28)29)8-18(15)31-20)9-16(25)12-3-6-17-14(7-12)22-19(26)10-30-17/h3-8,11,20H,9-10H2,1-2H3,(H,22,26)/t20-/m1/s1/f/h22H 1CE4896B1E9B5824