A system and method is disclosed for transferring files from a source computer to a destination computer. Each selected data set has a plurality of values corresponding to a plurality of parameter values. The purified hemoglobinantioxidant composition is then subjected to a chemical modification process. Further, a metallic substrate may be used instead of a sapphire substrate. Branch metrics associated with the transitions in the merged trellis are cumulative, and are employed for the update process of forward and backward probabilities by the MAP algorithm.