InChI=1/C19H15ClN4O4/c1-19(11-3-5-12(20)6-4-11)16(26)24(18(28)23-19)9-15(25)10-2-7-13-14(8-10)22-17(27)21-13/h2-8H,9H2,1H3,(H,23,28)(H2,21,22,27)/t19-/m0/s1/f/h21-23H 19E1AE03F9E98E76