You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[2-(2-chlorophenyl)-3H-benzimidazol-5-yl]-2-(1-methylpyrazol-4-yl)-1,3-thiazole-4-carboxamide .
user
C21H15ClN6OS
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