User: I'm searching for the SMILES of a molecule that can be described by:
The molecule is a monocarboxylic acid anion that is the conjugate base of pentalenolactone, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a pentalenolactone.
Assistant: This is a molecule that fits this description: CC1=C[C@@]23[C@H](C=C(C(=O)[O-])[C@@H]2COC(=O)[C@]32CO2)[C@@H]1C
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#}
(1R,4aR,6aR,7S,9aS)-7,8-dimethyl-2-oxospiro[4,4a,6a,7-tetrahydropentaleno[1,6a-c]pyran-1,2'-oxirane]-5-carboxylate
The molecule is a monocarboxylic acid anion that is the conjugate base of pentalenolactone, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a pentalenolactone.