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 (3R,4R)-3-[(5-cyano-1H-pyrrolo[2,3-b]pyridin-4-yl)amino]-N-cyclopropyl-4-ethylpyrrolidine-1-carboxamide .
user
C18H22N6O
assistant