You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1R,5R,6R)-7,7-dimethyl-2-oxabicyclo[3.2.0]heptan-6-yl] 5-methyl-1-[3-(trifluoromethyl)phenyl]pyrazole-4-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H21F3N2O3
assistant