You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[3-(hydroxymethyl)anilino]-2-[4-(1,3-oxazol-5-yl)anilino]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H24N6O3
assistant