You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(6-methylpyridin-2-yl)-4-morpholin-4-ium-4-yl-2-pyridin-2-yl-1-pyrrolidin-1-ylbutan-1-one;chloride into its molecular formula.
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C23H31ClN4O2
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