User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is 2-methyl-3-oxopropanoate with R configuration at the chiral centre; major microspecies at pH 7.3. It is an enantiomer of a (S)-methylmalonate semialdehyde.
Assistant: This is a molecule that fits this description: C[C@H](C=O)C(=O)[O-]
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that can be described {#by|as!}:
{description#}
Assistant: This is a molecule that fits {#your|this!} description: {SMILES#}
C[C@H](C=O)C(=O)[O-]
(2R)-2-methyl-3-oxopropanoate
The molecule is 2-methyl-3-oxopropanoate with R configuration at the chiral centre; major microspecies at pH 7.3. It is an enantiomer of a (S)-methylmalonate semialdehyde.