A chemist discovered a new compound contains carbon, hydrogen and oxygen. To be able to determine the molecular formula of this compound, the chemist first did the combustion analysis of 2.26 g of the compound which yielded 2.504 g of CO2 and 0.6808 g of H20. Then, to determine the molecular weight of this compound, 135 mL of solution containing 1.1 g of the compound was placed in U-shaped tube at 25 C and osmatic pressure of solution was measured as 420 mmHg. What is the molecular formula of this newly discovered compound? (C: 12.0107 g/mol, H:1.008 g/mol, O: 15.999 g/mol, R: 0.082057 atmL/molk)