You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-[(3S)-2-[(4-methoxyphenyl)methyl]-1,1-dioxo-3H-1,2-benzothiazol-3-yl]-N-prop-2-ynylacetamide .
user
C20H20N2O4S
assistant