You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-buta-1,3-dien-2-yl-3-(5,5-dihydroxypentyl)-7-methyl-6,7-dihydroquinoxalin-6-yl]-(2,7-diazaspiro[3.5]nonan-2-yl)methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H36N4O3
assistant