The molecule is a dipeptide derivative that consists of arginylaspartamide having a 2-[(5-sulfo-1-naphthyl)amino]ethyl group attached to the amide nitrogen at the carboxy terminus and a [2-(2-{[4-(indol-3-yl)butanoyl]amino}ethoxy)ethoxy]acetyl group attached to the amino terminus. It is a dipeptide, a member of indoles and an arenesulfonic acid.
5-[2-[[4-amino-2-[[5-(diaminomethylideneamino)-2-[[2-[2-[2-[4-(1H-indol-3-yl)butanoylamino]ethoxy]ethoxy]acetyl]amino]pentanoyl]amino]-4-oxobutanoyl]amino]ethylamino]naphthalene-1-sulfonic acid