You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[9-(4-naphthalen-2-ylphenyl)naphtho[2,1-b][1]benzothiol-5-yl]-4-phenyl-6-(4-phenylphenyl)-1,3,5-triazine is the IUPAC name of a molecule. Please give its molecular formula.
user
C53H33N3S
assistant