H-Ala-Cys-Tyr-Cys-Arg-Ile-Pro-Ala-Cys-Ile-Ala-Gly-Glu-Arg-Arg-Tyr-Gly-Thr-Cys-Ile-Tyr-Gln-Gly-Arg-Leu-Trp-Ala-Phe-Cys-Cys-OH Trifluoroacetate (Disulfide bonds between Cys² and Cys³⁰/Cys⁴ and Cys¹⁹/Cys⁹ and Cys²⁹)