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 1-[(3R)-3-[(2-chloro-7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]piperidin-1-yl]prop-2-en-1-one .
user
C14H16ClN5O
assistant