InChI=1S/C22H20ClN3O4/c23-16-6-7-17-14(9-16)10-18(24-17)20(27)25-19(8-13-4-2-1-3-5-13)21(28)26-11-15(12-26)22(29)30/h1-7,9-10,15,19,24H,8,11-12H2,(H,25,27)(H,29,30)/t19-/m0/s1