CNCCNCCN mol12511 0_1 CNCCNCC[NH3+] mol12511 1_1 C[NH2+]CCNCCN mol12511 1_2 CNCC[NH2+]CCN mol12511 1_3 C[NH2+]CC[NH2+]CCN mol12511 2_1 C[NH2+]CCNCC[NH3+] mol12511 2_2 CNCC[NH2+]CC[NH3+] mol12511 2_3 C[NH2+]CC[NH2+]CC[NH3+] mol12511 3_1