Biotinyl-eAhx-Cys-Lys-Ser-Hyp-Gly-Ser-Ser-Cys-Ser-Hyp-Thr-Ser-Tyr-Asn-Cys-Cys-Arg-Ser-Cys-Asn-Hyp-Tyr-Thr-Lys-Arg-Cys-Tyr-NH2 Trifluoroacetate (Disulfide bonds between Cys² and Cys¹⁷/Cys⁹ and Cys²⁰/ Cys¹⁶ and Cys²⁷)