Similar encoding gives 24 for S-ranked ligand B, 27 for R-ranked ligand A, and 43 for R-ranked ligand B. So ligand B, with a high score of 43, is given higher priority than ligand A, and the designator is R. (each encoded as the number 3 by one of the reference options) will be selected in preference to either RS or SR (each of which will be encoded as 2 by one of the options and 1 by the other). And yet, identical readings or opposite readings overallsuch as RRSRRS vs. SSRSSR, which need to pass on to Rule 5are not distinguished, as they will be encoded as the same two numbers with one or the other reference options.