Clc1ncnc2nc[nH]c12 mol4858 0_1 Clc1[nH+]cnc2nc[nH]c12 mol4858 1_1 Clc1nc[nH+]c2nc[nH]c12 mol4858 1_2 Clc1ncnc2[nH+]c[nH]c12 mol4858 1_3 Clc1ncnc2nc[n-]c12 mol4858 -1_1