115042-89-2 Cyclo(L-ala-D-ala-L-ada-D-pro)(2) Cyclo(L-alanyl-D-alanyl-9,10-didehydro-L-2-aminodecanoyl-D-prolyl-L-alanyl-D-alanyl-9,10-didehydro-L-2-aminodecanoyl-D-prolyl) Cyclo(aaap)(2) Cyclo(alanyl-alanyl-2-amino-9-decanoic acid-prolyl)(2)