You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (2R)-N-[(4-ethyl-1,2,4-triazol-3-yl)methyl]-2-naphthalen-1-ylpyrrolidine-1-carboxamide .
user
C20H23N5O
assistant