1 CMV (2r,4s)-2-[(1r)-1-({(2r)-2-[(4-ethyl-2,3-dioxopiperazin-1-yl)amino]-2-phenylacetyl}amino)-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid 1.000 2 FMZ (2r,4s)-5,5-dimethyl-2-[(1r)-2-oxo-1-({(2r)-2-[(2-oxoimidazolidin-1-yl)amino]-2-phenylacetyl}amino)ethyl]-1,3-thiazolidine-4-carboxylic acid 0.829