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 8-ethyl-7-[(Z,3Z)-3-(3-ethyl-1,3-benzothiazol-2-ylidene)prop-1-enyl]-6-phenylimidazo[4,5-g][1,2,3]benzothiadiazol-8-ium .
user
C27H24N5S2+
assistant