You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (1R)-N-[(2-chlorophenyl)methyl]-4-[(4-fluorophenyl)methyl]-1,3-dioxo-1lambda4,4-benzothiazine-6-carboxamide .
user
C23H18ClFN2O3S
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