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 (3R,3'S)-1'-(3,5-dimethyl-1,2-oxazole-4-carbonyl)-N,N-dimethyl-1-oxospiro[4,5-dihydro-2H-2-benzazepine-3,4'-pyrrolidine]-3'-carboxamide is given. What is its corresponding molecular formula?
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C22H26N4O4
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