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 (Z)-2-(1,3-benzothiazol-2-yl)-3-hydroxy-4-[(5-oxo-4-propyl-[1,2,4]triazolo[4,3-a]quinazolin-1-yl)sulfanyl]but-2-enenitrile .
user
C23H18N6O2S2
assistant