You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1R,2S)-2-[4-[bis(2-methylpropyl)amino]-3-[[4-[4-(cyanomethyl)phenyl]phenyl]carbamoylamino]phenyl]cyclopropane-1-carboxylic acid into its molecular formula.
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C33H38N4O3
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