You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[(S)-(4-fluorophenyl)-thiophen-2-ylmethyl]-2-pyrrolidin-1-ium-1-ylacetamide is given. What is its corresponding molecular formula?
user
C17H20FN2OS+
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