You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-phenyl-N-[4-(7-phenyl-2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)phenyl]-N-(4-phenylphenyl)carbazol-3-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C48H34N2O2S
assistant