Cc1c(O)ncnc1Cl mol7231 0_1 Cc1c([O-])nc[nH+]c1Cl mol7231 0_2 Cc1c(Cl)nc[nH+]c1O mol7231 1_1 Cc1c(O)nc[nH+]c1Cl mol7231 1_2 Cc1c([O-])ncnc1Cl mol7231 -1_1