CC[C@@H](C#N)C(=O)O    mol32999    0_1
CC[C@@H](C#[NH+])C(=O)[O-]    mol32999    0_2
CC[C@@H](C#N)C(=O)[O-]    mol32999    -1_1
CC[C-](C#N)C(=O)O    mol32999    -1_2