You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(1R)-1-(2,3-dihydro-1,4-benzodioxin-6-yl)ethyl]-2-[(3-methylphenyl)methylsulfanyl]acetamide into its molecular formula.
user
C20H23NO3S
assistant