You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-pyrrolidin-1-yl-N-[3-(1H-1,2,4-triazol-5-yl)phenyl]pyridine-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H18N6O
assistant