You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[1-(2-aminoethyl)imidazol-4-yl]-2-imidazo[2,1-b][1,3]thiazol-6-ylethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H13N5OS
assistant