You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (E)-(4-butoxyphenyl)-[1-[2-(diethylazaniumyl)ethyl]-4,5-dioxo-2-pyridin-4-ylpyrrolidin-3-ylidene]methanolate ?
user
C26H33N3O4
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