You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[2-[2-(4-bromo-2,6-dimethylphenyl)ethylamino]-2-oxoacetyl]-3,4-dihydro-1H-isoquinoline-4-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H25BrN2O4
assistant