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 (2S)-4-[(1-methylpyrazol-4-yl)methyl]-2-(6-pyridin-3-yltriazolo[1,5-a]pyridin-3-yl)morpholine .
user
C20H21N7O
assistant