CAS No 81493-98-3 , 4-[[4-amino-2-[[2-[[2-[[2-[[2-[[2-[[2-amino-5-(diaminomethylideneamino)
pentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-4-
methylpentanoyl]amino]-3-methylpentanoyl]amino]-4-carboxybutanoyl]amino]
-3-carboxypropanoyl]amino]-4-oxobutanoyl]amino]-5-[[1-[[1-[[1-[[1-
(carboxymethylamino)-5-(diaminomethylideneamino)-1-oxopentan-2-yl]amino]
-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-3-(4-
hydroxyphenyl)-1-oxopropan-2-yl]amino]-5-oxopentanoic acid