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 1,4-dioxa-8-azaspiro[4.5]decan-8-yl-(2-methyl-4-propan-2-yl-1,3-oxazol-5-yl)methanone .
user
C15H22N2O4
assistant