You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(1H-benzimidazol-2-ylsulfonylmethyl)-2-[4-(trifluoromethyl)phenyl]-1,3-thiazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H12F3N3O2S2
assistant