You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2E)-2-[(2,3-dichlorophenyl)methylidene]-5,6-dihydroimidazo[2,1-b][1,3]thiazol-3-one into molecular formula.
user
C12H8Cl2N2OS
assistant