You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4-cyclopropyl-2-methylpyrimidin-5-yl)-(6-methyl-3,4a,5,7,8,8a-hexahydro-2H-pyrido[4,3-b][1,4]oxazin-4-yl)methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H24N4O2
assistant