You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[[5-(4-bromophenyl)-1H-imidazol-2-yl]methyl]-3-(5-ethynyl-1,3-thiazol-2-yl)urea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H12BrN5OS
assistant