You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-cyclopropyl-1-ethyl-5-methyl-4-[(2-pyrrolidin-1-ylsulfonylphenyl)methyl]pyrrole-3-carbonitrile into its molecular formula.
user
C22H27N3O2S
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