You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-ethyl-4-methanethioyl-N-(2-pyridin-4-ylethyl)-6-(trifluoromethyl)quinolin-1-ium-3-carboxamide is given. What is its corresponding molecular formula?
user
C21H19F3N3OS+
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