You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-benzylpyridine;3-chloro-1-phenylisoquinoline;1-phenyl-3-[phenyl(pyridin-2-yl)methyl]isoquinoline by IUPAC nomenclature, provide its molecular formula.
user
C54H41ClN4
assistant