You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[6-[chloro-(4-chlorophenyl)-(3-methylimidazol-4-yl)methyl]-2-hydroxy-1-methyl-2H-1,8-naphthyridin-4-yl]benzonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H21Cl2N5O
assistant