Megaphone,a cytotoxic molecule isolated from a flowering plant of the laurel family,contains carbon,hydrogen,and oxygen.The complete combustion of a 2.0000 g sample in excess O2 produces 4.9590 g CO2 and 1.3837 g H2O.Mass spectrometry experiments showed that megaphone's molecular mass is approximately 390 amu.What is the molecular formula of megaphone?
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