You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2-oxochromen-7-yl)-diphenyl-lambda4-sulfanyl] 2,3,4,5,6-pentafluorobenzenesulfonate is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H15F5O5S2
assistant