Met-Met-Arg-Asp-Ser-Gly-Cys-Phe-Gly-Arg-Arg-Ile-Asp-Arg-Ile-Gly-Ser-Leu-Ser-Gly-Met-Gly-Cys-Asn-Gly-Ser-Arg-Lys-Asn(Disulfide bridge Cys7-Cys23 )
C₁₂₄H₂₁₁N₄₇O₄