5234-11-7 (4E,11E)-6,13-dipentyl-1,4,8,11-tetraazacyclotetradeca-2,4,6,9,11,13-hexaene-2,3,9,10-tetracarbonitrile 920316-97-8 1,2-Dithia-5,11-diazacyclotridecane-4,12-dicarboxylic acid,7-[[(1,1-dimethylethoxy)carbonyl]amino]-6,10-dioxo-, 4,12-dimethylester, (4R,7S,12R)-