CC(C)[C@H](C(=O)O)N1C[C@@H](NC(=O)Cc2ccccc2)C1=O    mol32351    0_1
CC(C)[C@H](C(=O)O)N1C[C@@H](NC(=O)[CH-]c2ccccc2)C1=O    mol32351    -1_1
CC(C)[C@H](C(=O)O)N1C[C@@H]([N-]C(=O)Cc2ccccc2)C1=O    mol32351    -1_2
CC(C)[C@H](C(=O)[O-])N1C[C@@H](NC(=O)Cc2ccccc2)C1=O    mol32351    -1_3