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 [4-[4-amino-6-(2-ethynyl-4-methylpyrimidin-5-yl)-7-methylpyrrolo[2,3-d]pyrimidin-5-yl]phenyl]-[(2S)-2-ethynylpyrrolidin-1-yl]methanone .
user
C27H23N7O
assistant