You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2S)-1-[3-[(4-bromo-2-fluorophenyl)sulfonyl-methylamino]propylamino]-3-cyclopentyl-1-oxopropan-2-yl]-1-benzothiophene-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C27H31BrFN3O4S2
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