You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7-methoxy-2-oxochromen-4-yl)methyl 9-oxo-2,3-dihydro-1H-pyrrolo[2,1-b]quinazoline-6-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H18N2O6
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