1 SRS 4-methyl-3-(9-oxo-1,8-diaza-tricyclo[10.6.1.0(13,18)]nonadeca-12(19),13(18),15,17-tetraene-10-carbamoyl)penta-methylsulfonediimine 1.000 2 RSS 5-methyl-3-(9-oxo-1,8-diaza-tricyclo[10.6.1.013,18]nonadeca-12(19),13,15,17-tetraen-10-ylcarbamoyl)-hexanoic acid 0.806 3 RRS N4-hydroxy-2-isobutyl-n1-(9-oxo-1,8-diaza-tricyclo[10.6.1.013,18]nonadeca-12(19),13,15,17-tetraen-10-yl)-succinamide 0.784