You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(2-chlorophenyl)-1-[4-(5-methyl-1,2,4-oxadiazol-3-yl)-8-oxa-2-azaspiro[4.5]decan-2-yl]ethanone into its molecular formula.
user
C19H22ClN3O3
assistant