CC(C)(C)OC(=O)N[C@@H](Cc1ccccc1)C(=O)O    mol34191    0_1
CC(C)(C)OC(=O)N[C@@H](Cc1ccccc1)C(=O)[O-]    mol34191    -1_1
CC(C)(C)OC(=O)[N-][C@@H](Cc1ccccc1)C(=O)O    mol34191    -1_2