You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[2-[3-(1-amino-6-methylpyridin-1-ium-2-yl)propyl]phenyl]-2-phenylethane-1,2-dione into molecular formula.
user
C23H23N2O2+
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