You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4-butoxy-2-methylphenyl)-[1-[3-(dimethylazaniumyl)propyl]-4,5-dioxo-2-(3,4,5-trimethoxyphenyl)pyrrolidin-3-ylidene]methanolate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H40N2O7
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