You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[[2-(2,6-dioxopiperidin-3-yl)-1,3-dioxoisoindol-5-yl]methyl]-5-(1-oxobutan-2-yl)pyridine-2-carboxamide;formaldehyde into its molecular formula.
user
C25H24N4O7
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