CCCCCCNc1ncnc2c1cnn2C mol4951 0_1 CCCCCCNc1ncnc2c1c[nH+]n2C mol4951 1_1 CCCCCCNc1nc[nH+]c2c1cnn2C mol4951 1_2 CCCCCC[NH2+]c1ncnc2c1cnn2C mol4951 1_3 CCCCCCNc1[nH+]cnc2c1cnn2C mol4951 1_4