You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 1'-[(4-chlorophenyl)methyl]-5-methoxy-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)spiro[2H-indole-3,4'-piperidine] ?
user
C26H26ClN5O
assistant