You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 6-(4-chlorobenzoyl)-3,5-bis(furan-2-yl)-1,1-dioxo-1,4-thiazinane-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H20ClNO7S
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