You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
bicyclo[2.2.2]octa-1(6),4,7-trien-2-one;1,1'-biphenyl;2-hydroxy-1-phenylethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H24O3
assistant