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 3-[5-(2-chlorophenyl)-1,3-oxazol-2-yl]-N-[(4-fluorophenyl)methyl]-N-methylpropanamide is given. What is its corresponding molecular formula?
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C20H18ClFN2O2
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