You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-(2,3-dihydro-1,4-benzodioxin-6-ylmethyl)-2-(2,4-dioxo-1,3-diazaspiro[4.4]nonan-3-yl)-N-ethylacetamide .
user
C20H25N3O5
assistant