H-Asn-Thr-Phe-Tyr-Cys-Cys-Glu-Leu-Cys-Cys-Asn-Pro-Ala-Cys-Ala-Gly-Cys-Tyr-OH Trifluoroacetate (Disulfide bonds between Cys⁵ and Cys¹⁰/Cys⁶ and Cys¹⁴/Cys⁹ and Cys¹⁷)