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 tert-butyl (3R)-3-[[3-chloro-1-(4-methoxybutyl)indole-2-carbonyl]-propan-2-ylamino]piperidine-1-carboxylate .
user
C27H40ClN3O4
assistant