H-Arg-Gly-Ala-Ala-Pro-Pro-Gly-Gln-Lys-Gly-Gln-Ala-Asn-Ala-Thr-Arg-amino-PEG6-propionyl-Lys-Ser-Gly-Asp-Arg-Ser-Gly-Tyr-Ser-Ser-Pro-Gly-Ser-Pro-Gly-Thr-Pro-Gly-Ser-Arg-OH Trifluoroacetate