InChI=1/C21H20N2O4/c1-13-4-7-18(10-14(13)2)23-20(24)17(12-22)11-16-5-8-19(9-6-16)27-15(3)21(25)26/h4-11,15H,1-3H3,(H,23,24)(H,25,26)/p-1/b17-11-/t15-/m1/s1/fC21H19N2O4/h24H/q-1/b17-11-,23-20? BFB70C127255452E