You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(2R)-1-[4-chloro-3-(dimethylsulfamoyl)anilino]-1-oxopropan-2-yl] (E)-pent-2-enoate by IUPAC nomenclature, provide its molecular formula.
user
C16H21ClN2O5S
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