You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (2S)-2-[(2-chlorophenyl)methyl-(3,3-diphenylpropanoyl)amino]-N-ethyl-3-phenylpropanamide is given. What is its corresponding molecular formula?
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C33H33ClN2O2
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