You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(2-chloro-4-fluorophenyl)methyl]-1-oxa-3,8-diazaspiro[4.5]decan-2-one;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H17Cl2FN2O2
assistant