You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (4E,5S)-4-[(4-butoxy-3-methylphenyl)-hydroxymethylidene]-5-(4-fluorophenyl)-1-(3-methoxypropyl)pyrrolidine-2,3-dione by IUPAC nomenclature, provide its molecular formula.
user
C26H30FNO5
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