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 (10R)-7-[4-(4-fluorophenyl)piperazin-1-yl]-9-oxo-6,8-diazaspiro[4.5]dec-6-ene-10-carbonitrile .
user
C19H22FN5O
assistant