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-(5-bromothiophen-2-yl)-2-oxoethyl] 2-(2-oxoquinoxalin-1-yl)acetate is given. What is its corresponding molecular formula?
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C16H11BrN2O4S
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