You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(2-chloro-4,5-difluorophenyl)sulfonyl-2-[(2-hydroxy-2-methylpropanoyl)amino]thiophene-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H13ClF2N2O5S2
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