Hexanoyl-His-Ser-Asp-Ala-Val-Phe-Thr-Asp-Asn-Tyr-Thr-Arg-Leu-Arg-Lys-Gln-Met-Ala-Ala-Lys-Lys-Tyr-Leu-Asn-Ser-Ile-Lys-Lys-OH Trifluoroacetate