InChI=1/C21H19N3O4/c1-11-10-22-20(26)18-17(11)15-9-13(5-8-16(15)24-18)19(25)23-14-6-3-12(4-7-14)21(27)28-2/h3-9,11,24H,10H2,1-2H3,(H,22,26)(H,23,25)/t11-/m0/s1/f/h22-23H 8F8E884BF1FF82FF