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 9H-fluoren-9-ylmethyl 4-[(5-amino-3-fluorosulfonyl-2-methylphenyl)methyl]piperazine-1-carboxylate is given. What is its corresponding molecular formula?
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C27H28FN3O4S
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