L-Cysteinamide, N-((4,7,10-tris(carboxymetnyl)-1,4,7,10-tetraazacyclodec-1-yl)acetyl)-D-phenylalanyl-L-cysteinyl-L-tyrosyl-D-tryptophyl-L-lysyl-L-threonyl-N-((1R,2R)-2-hydroxy-1-(hydroxymethyl)propyl)-, cyclic(2-7)-disulfide