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-acetyloxy-4-methoxyoxolan-3-yl) 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate is given. What is its corresponding molecular formula?
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C21H17ClF3NO9
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