Pheromones are compounds secredted by the females of many insect species to attract males. One of these compunds contains 80.78% C, 13.56% H, and 5.66% O. A solution of 1.00 g of this pheromone in 8.50 g of benzene freezes at 3.37 ^o C. What are the molecular formula and molar mass of the compund? (The normal freezing point of pure benzene is 5.50 ^o C.)