You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[4-[1-[[4-(4-chlorophenyl)-1,3-thiazol-2-yl]amino]-1-oxopropan-2-yl]sulfanylphenyl]carbamoyl]benzoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H20ClN3O4S2
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