You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2,3-dihydro-1,4-benzodioxin-6-yl(ethylsulfonyl)amino]-N-(2-phenylsulfanylethyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H24N2O5S2
assistant