You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 6-methyl-5-[1-(4-methylpiperidin-1-yl)ethyl]-2-(1-methylpyrrol-2-yl)indolizine-7-carboxylic acid into its molecular formula.
user
C23H29N3O2
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