You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 3-amino-N-[(1S)-1-[7-[2-(1-methylpyrazol-4-yl)ethynyl]-1-phenylbenzimidazol-2-yl]ethyl]pyrazine-2-carboxamide ?
user
C26H22N8O
assistant