Cn1nnc(-c2ccc(Cl)cc2)n1 mol25949 0_1 Cn1n[nH+]c(-c2ccc(Cl)cc2)n1 mol25949 1_1 Cn1nnc(-c2ccc(Cl)cc2)[nH+]1 mol25949 1_2 Cn1nc(-c2ccc(Cl)cc2)n[nH+]1 mol25949 1_3