A 2.52 g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O2 to yield 3.52 g of CO2 and 0.839 g of H2O. Another sample of the same compound, of mass 4.14 g, yielded 1.75 g of SO3. A reaction to determine the nitrogen content was carried out on a third sample with a mass of 5.66 g and yielded 1.88 gHNO3 (assume that all of the nitrogen in HNO3 came from the compound).
Calculate the empirical formula of the compound.
Express your answer as a chemical formula. Enter the elements in the order: C, H, S, N, O.