Tyr-D-Ala-Asp-Ala-lle-Phe-Thr-Gln-Ser-Tyr-Arg-Lys-Val-Leu-Ala-Gin-Leu-Ser-Ala-Arg-Lys-Leu-Gln-Asp-lle-Leu-Ser-Arg-Lys (maleimidopropionyl)-NH2