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-[2-[4-(4-methoxy-7-methyl-1,3-benzothiazol-2-yl)piperazin-1-yl]ethyl]butanamide .
user
C19H28N4O2S
assistant