You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,5R)-N-[(S)-1-benzofuran-2-yl(pyridin-3-yl)methyl]bicyclo[3.1.0]hexane-6-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H20N2O2
assistant