You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[3-[2-(3,4-dimethoxyphenyl)ethyl]-4-oxoquinazolin-2-yl]sulfanyl-N-prop-2-enylacetamide into molecular formula.
user
C23H25N3O4S
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