C[C@@H]([NH3+])C(=O)N(C)[O-]    mol31391    0_1
C[C@@H](N)C(=O)N(C)O    mol31391    0_2
C[C@@H](N)C(=[OH+])N(C)O    mol31391    1_1
C[C@@H]([NH3+])C(=O)N(C)O    mol31391    1_2