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 N-[2-[(7-chloroquinolin-4-yl)amino]ethyl]-3-methyl-2-oxo-1,3-benzoxazole-6-sulfonamide is given. What is its corresponding molecular formula?
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C19H17ClN4O4S
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