You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (E)-1-(2-bromophenyl)-3-hydroxy-2-isoquinolin-1-yl-3-(4-methylphenyl)prop-2-en-1-one by IUPAC nomenclature, provide its molecular formula.
user
C25H18BrNO2
assistant