You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-(1,1-dioxo-1,4-thiazinan-4-yl)ethyl]-2-(2-methylphenyl)sulfanylacetamide by IUPAC nomenclature, provide its molecular formula.
user
C15H22N2O3S2
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