You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N-(3-cyano-1-cyclohexyl-4,5-diphenylpyrrol-2-yl)-2-(1,3-dioxoisoindol-2-yl)-3-phenylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C40H34N4O3
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