You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(4E)-4-[(3-chloro-5-methoxy-4-phenylmethoxyphenyl)methylidene]-2,5-dioxoimidazolidin-1-yl]-N-(2-ethylphenyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H26ClN3O5
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