soccer4kk

What are the steps to solving this problem? "You have just purified a natural molecular compound from the bark of a tree and analyzed some with a mass spectrometer. The compound is 51.4% Carbon, 5.75% Hdrogen, 22.8% Oxygen, and 20.00% Nitrogen. When you dissolve 5.00g of the compound in 20.0g water, the resulting solution freezes at -1.1 deggree celcius. What is the molecular forumla of the compound?