Xanthotoxin, a photosensitizer compound found in parsnips, contains only C, HI, and O. Combustion of 1.000 g of xanthotoxin produces 2.443 g of CO2 and 0.3334 g of H2O. Determine the molar mass of the compound if it is between 175.0 and 250.0 g/mol. Provide an answer to four significant figures.
