You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance ethyl 4-[[4-hydroxy-5-methyl-2-oxo-3-[4-(trifluoromethylsulfonyl)phenyl]imidazol-1-yl]methyl]pyridine-3-carboxylate .
user
C20H18F3N3O6S
assistant