You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[5-(3-chloro-4-fluorophenyl)-2-methylphenyl]-4-hydroxy-8-(3-hydroxypropyl)-1-azaspiro[4.5]dec-3-en-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H27ClFNO3
assistant