8-benzoyl-9-(2-fluorophenyl)-4-methylfuro[2,3-h]chromen-2-one;8-benzoyl-9-(3-fluorophenyl)-4-methylfuro[2,3-h]chromen-2-one;8-benzoyl-9-(4-fluorophenyl)-4-methylfuro[2,3-h]chromen-2-one;4-methyl-8,9-diphenylfuro[2,3-h]chromen-2-one;4-methyl-9-phenyl-8-propylfuro[2,3-h]chromen-2-one The above is the IUPAC name of a molecule. Write its molecular formula.