L-Cysteinamide, N-(1-deoxy-4-O-alpha-D-glucopyranosyl-D-fructopyranos-1-yl)-D-phenylalanyl-L-cysteinyl-L-phenylalanyl-D-tryptophyl-L-lysyl-L-threonyl-N-(2-hydroxy-1-(hydroxymethyl)propyl)-, cyclic (2-7)-disulfide, (R-(R*,R*))-