137706-83-3 Snx 183 omega-Conotoxin M viia (reduced), 3-L-leucine-6-L-glutamine-7-L-serine-17-L-serine-20a-endo-L-serine-, cyclic (1-16),(8-20),(15-25)-tris(disulfide) omega-Conotoxin svib omega-Ctx-svib