You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(5-chloro-2,3-dihydro-1,4-benzodioxin-7-yl)methylsulfonylmethyl]-2-propyl-1,3-thiazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H18ClNO4S2
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