You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by N-cyclopropyl-3-(2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl)-N-(4-ethylcyclohexyl)propanamide ?
user
C22H35N3O3
assistant