You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(thiophen-2-ylmethoxy)-3-[2-(1,3,5-trimethylpyrazol-4-yl)pyrrolidin-1-yl]propan-2-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H27N3O2S
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