You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2R)-N-[(3S)-3-cyano-1-[(1R,2S)-2-ethylcyclohexyl]pyrrolidin-3-yl]-2-(cyclohexylmethyl)-4-morpholin-4-yl-4-oxobutanamide into its molecular formula.
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C28H46N4O3
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