InChI=1/C15H12ClN3O4/c1-9-12(3-2-4-13(9)19(22)23)15(21)18-17-14(20)10-5-7-11(16)8-6-10/h2-8H,1H3,(H,17,20)(H,18,21)/f/h17-18H C35B39CC4C8767B6