You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[(3Z,5E)-5-chloro-2-methylidenehepta-3,5-dienyl]-8-methoxy-6-(5-methyl-1,3-thiazol-2-yl)quinazolin-4-amine .
user
C21H21ClN4OS
assistant