You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[3-[(4-chlorophenyl)sulfonylamino]quinoxalin-2-yl]amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H18ClN4O4S2-
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