You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[[2-(5-chloro-1,2-dihydropyridin-3-yl)-3-oxo-1-pyridin-2-yl-2,7-diazaspiro[3.5]nonane-7-carbonyl]amino]-3-methylpentanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H32ClN5O4
assistant