You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[[(1R)-1-[(1S,2S,4S)-2-bicyclo[2.2.1]heptanyl]ethyl]carbamoyl]-2-[2-(trifluoromethyl)benzimidazol-1-yl]acetamide .
user
C20H23F3N4O2
assistant