[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=C][Branch1][#Branch2][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][Cl][O][C@H1][Branch1][C][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a monocarboxylic acid anion that is the conjugate base of (R)-2-(4-chloro-2-methylphenoxy)propanoic acid, obtained by deprotonation of the carboxy group. It is a conjugate base of a (R)-mecoprop. It is an enantiomer of a (S)-2-(4-chloro-2-methylphenoxy)propanoate."}]