NCC(=O)NCCc1c[nH]cn1    mol12563    0_1
NCC(=O)NCCc1c[nH]c[nH+]1    mol12563    1_1
[NH3+]CC(=O)NCCc1c[nH]cn1    mol12563    1_2
[NH3+]CC(=O)NCCc1c[nH]c[nH+]1    mol12563    2_1