You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N,2-dimethyl-2-[[5-methyl-6-(2-methylpropanoylamino)-4-oxo-3,1-benzoxazin-2-yl]amino]-N-(2-pyridin-2-ylethyl)propanamide into molecular formula.
user
C25H31N5O4
assistant