You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-6-[[(4-nitrophenyl)methylamino]methyl]-2H-1,4-benzoxazin-3-amine;dihydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H20Cl2N4O3
assistant