Synonyms: 6,43:15,40-Bis(methanothiomethano)pyrrolo[2,1-d1][1,4,7,10,13,16,19,22,25,28,31,34,37,40,43,46,49,52]thiaheptadecaazacyclopentapentacontine,cyclic peptide deriv.;L-Cysteinyl-L-valyl-L-glutaminyl-D-cysteinyl-L-cysteinyl-2,3-didehydroalanyl-L-phenylalanylglycyl-L-prolyl-L-leucyl-threo-b-mercapto-D-a-aminobutyryl-L-tryptophyl-L-seryl-L-cysteinyl-L-a-aspartylglycyl-L-asparaginyl-threo-b-mercapto-D-a-aminobutyryl-L-lysine cyclic (1®18),(4®14),(5®11)-tris(sulfide); L-Lysine,L-cysteinyl-L-valyl-L-glutaminyl-D-cysteinyl-L-cysteinyl-2,3-didehydroalanyl-L-phenylalanylglycyl-L-prolyl-L-leucyl-threo-b-mercapto-D-a-aminobutyryl-L-tryptophyl-L-seryl-L-cysteinyl-L-a-aspartylglycyl-L-asparaginyl-threo-b-mercapto-D-a-aminobutyryl-, cyclic (1®18),(4®14),(5®11)-tris(sulfide)