Task: Please create a SMILES based on the description below.
Description: 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.
Result: C[C@H](C=O)C(=O)[O-]
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: {description#}
Result: {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.