InChI=1/C16H13ClN4O4/c17-8-1-3-10(11(18)5-8)15(23)25-7-14(22)19-9-2-4-12-13(6-9)21-16(24)20-12/h1-6H,7,18H2,(H,19,22)(H2,20,21,24)/f/h19-21H 5921ACB6517BA790