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 N-(2-chlorophenyl)-2-deuterio-N-[2-oxo-2-[4-[2-(1H-pyrazol-4-yl)ethyl]piperazin-1-yl]ethyl]-1H-indole-6-carboxamide ?
user
C26H27ClN6O2
assistant