You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(4-dibenzofuran-2-ylphenyl)-N-(4-phenylphenyl)-[1]benzothiolo[3,2-b][1]benzofuran-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C44H27NO2S
assistant