You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,4S,6S)-1-benzyl-4-[[[5-(trifluoromethyl)pyridin-2-yl]amino]methyl]-3-azabicyclo[4.1.0]heptane-3-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H22F3N3O2
assistant