You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[[4-(4-methylphenyl)-3,6-dihydro-2H-pyridin-1-yl]methyl]-5H-phenanthridin-6-one;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H25ClN2O
assistant