You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [4-[1-(3,5-dimethylpyrazol-1-yl)propan-2-yl]-1,4-diazepan-1-yl]-thiophen-3-ylmethanone into its molecular formula.
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C18H26N4OS
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