You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-3-(3-methylphenyl)-2-[1-[[3-(trifluoromethyl)phenyl]methyl]triazol-4-yl]-1,3-oxazolidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H19F3N4O
assistant