You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-anilinophenyl)-2-(1-methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H26N4O3
assistant