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 N-benzyl-N-(1-cyclopropylethyl)-2-(8-methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl)acetamide .
user
C23H31N3O3
assistant