H-Lys-Trp-Cys-Phe-Arg-Val-Cys-Tyr-Arg-Gly-Ile-Cys-Tyr-Arg-Arg-Cys-Arg-NH2 Trifluoroacetate (Disulfide bonds between Cys³ and Cys¹⁶/Cys⁷ and Cys¹²)