You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[(5R,6S)-6-methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl]-N-[(1S)-1-(5,6,7,8-tetrahydronaphthalen-2-yl)ethyl]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C23H31N3O3
assistant