You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance ethyl (2S)-2-[(2-chloro-3-oxospiro[3.5]non-1-en-1-yl)amino]-3-[4-[2-(trifluoromethyl)imidazo[4,5-c]pyridin-1-yl]phenyl]propanoate .
user
C27H26ClF3N4O3
assistant