[NH3+]CCNCC(=O)O    mol33972    1_1
[NH3+]CC[NH2+]CC(=O)[O-]    mol33972    1_2
NCCNCC(O)=[OH+]    mol33972    1_3
NCC[NH2+]CC(=O)O    mol33972    1_4
NCC[NH2+]CC(O)=[OH+]    mol33972    2_1
[NH3+]CCNCC(O)=[OH+]    mol33972    2_2
[NH3+]CC[NH2+]CC(=O)O    mol33972    2_3