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 5-[(6-chloro-1,3-benzothiazol-2-yl)amino]-1-(4-methylquinolin-2-yl)pyrazole-4-carbonitrile .
user
C21H13ClN6S
assistant