Nc1ncnc2c1cnn2-c1ccccc1 mol4929 0_1 Nc1[nH+]cnc2c1cnn2-c1ccccc1 mol4929 1_1 Nc1nc[nH+]c2c1cnn2-c1ccccc1 mol4929 1_2 [NH3+]c1ncnc2c1cnn2-c1ccccc1 mol4929 1_3 Nc1ncnc2c1c[nH+]n2-c1ccccc1 mol4929 1_4