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 N-[(1S)-1-(1,3-benzothiazol-2-yl)ethyl]-N-methyl-2-[methyl(2-phenoxyethyl)amino]acetamide .
user
C21H25N3O2S
assistant