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 4-[(3E)-3-[2-oxo-5-(3,4,5-trimethoxyphenyl)-1H-pyrrolo[2,3-b]pyridin-3-ylidene]propyl]benzonitrile ?
user
C26H23N3O4
assistant