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 [2-[methyl-[(1R)-1,2,3,4-tetrahydronaphthalen-1-yl]amino]-2-oxoethyl] 3-methyl-1,2-oxazole-5-carboxylate is given. What is its corresponding molecular formula?
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C18H20N2O4
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