CC(C)Nc1ncnc2c1cnn2C mol4957 0_1 CC(C)Nc1ncnc2c1c[nH+]n2C mol4957 1_1 CC(C)Nc1[nH+]cnc2c1cnn2C mol4957 1_2 CC(C)[NH2+]c1ncnc2c1cnn2C mol4957 1_3 CC(C)Nc1nc[nH+]c2c1cnn2C mol4957 1_4