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-(2-chloropyridin-3-yl)-1-(3-cyanophenyl)sulfonyl-4-fluoropyrrol-3-yl]ethylcarbamic acid is given. What is its corresponding molecular formula?
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C19H14ClFN4O4S
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