You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-2-(2,4-dichlorophenoxy)-1-[(1R,4S)-2,2-dioxo-2lambda6-thia-5-azabicyclo[2.2.1]heptan-5-yl]propan-1-one by IUPAC nomenclature, provide its molecular formula.
user
C14H15Cl2NO4S
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