You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[[5-(hydroxymethyl)-1-[[2-(trifluoromethyl)phenyl]methyl]imidazol-2-yl]sulfanylmethyl]benzonitrile by IUPAC nomenclature, provide its molecular formula.
user
C20H16F3N3OS
assistant