2-[[2-[[2-[[2-[[2-[[2-[(2-amino-4-methylpentanoyl)amino]-3-hydroxypropanoyl]amino]-3-hydroxypropanoyl]amino]-3-phenylpropanoyl]amino]-3-methylbutanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-methylpentanamide; Leu-Ser-Ser-Phe-Val-Arg-Ile amide acetate salt