InChI=1/C14H7ClN2O5/c15-7-1-2-10-8(4-7)11(18)6(5-22-10)3-9-12(19)16-14(21)17-13(9)20/h1-5H,(H2,16,17,19,20,21)/p-1/fC14H6ClN2O5/h16H/q-1/b9-3- 4993C5E3ABC1B3D0