You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule tert-butyl N-[4-[5-(aminomethyl)-3-(2,2,2-trichloroacetyl)imidazo[1,2-a]pyridin-4-ium-4-yl]butyl]-N-(trifluoromethylsulfonyl)carbamate into molecular formula.
user
C20H25Cl3F3N4O5S+
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