You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 8-N,10-N-dinaphthalen-2-yl-10-N-phenyl-8-N-(4-phenylphenyl)naphtho[2,1-b][1]benzothiole-8,10-diamine ?
user
C54H36N2S
assistant