H-Ala-Thr-Cys-Asp-Leu-Leu-Ser-Gly-Thr-Gly-Ile-Asn-His-Ser-Ala-Cys-Ala-Ala-His-Cys-Leu-Leu-Arg-Gly-Asn-Arg-Gly-Gly-Tyr-Cys-Asn-Gly-Lys-Ala-Val-Cys-Val-Cys-Arg-Asn-OH (Disulfide bonds between Cys³ and Cys³⁰/Cys¹⁶ and Cys³⁶/Cys²⁰ and Cys³⁸)