You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (6Z)-3-(4-chlorophenyl)-6-[[4-(dimethylamino)phenyl]methylidene]-[1,3]thiazolo[2,3-c][1,2,4]triazol-5-one into its molecular formula.
user
C19H15ClN4OS
assistant