You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-(2-bromo-5-nitrophenyl)-2-(6-phenylimidazo[2,1-b][1,3]thiazol-3-yl)acetamide is given. What is its corresponding molecular formula?
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C19H13BrN4O3S
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