Synonyms: 1H,5H-Dipyrrolo[1,2-a:1',2'-h][1,4,8,11]tetraazacyclotetradecine-5,9,14,18(6H,15H,18aH)-tetrone,decahydro-7,16-diphenyl-, stereoisomer (8CI); Cyclic(D-3-phenyl-b-alanyl-L-prolyl-D-3-phenyl-b-alanyl-L-prolyl);1H,5H-Dipyrrolo[1,2-a:1',2'-h][1,4,8,11]tetraazacyclotetradecine, cyclicpeptide deriv.; Cyclo(2-phenyl-b-alanyl-L-prolyl-2-phenyl-b-alanyl-L-prolyl) (8CI); Cyclo(D-3-phenyl-b-alanyl-L-prolyl-D-3-phenyl-b-alanyl-L-prolyl); Cyclo(R-b-phenyl-b-alanyl-L-prolyl-R-b-phenyl-b-alanyl-L-prolyl); Roccanin