Spinoxin

O=C1N2[C@@](CCC2)(C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@]3(C(=O)N[C@@]([C@H](CC)C)(C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@]4(C(=O)N[C@@H](CCCCN)C(=O)N[C@@]5(C(=O)N[C@@H](CC6=CC=C(O)C=C6)C(=O)NCC(=O)N[C@H](C(N)=O)CSSC[C@@]1(NC(=O)CNC(=O)[C@]([C@@H](C)O)(NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCSC)NC(=O)[C@](CSSC5)(NC(=O)[C@]7(N(C(=O)[C@H](CO)NC(=O)[C@H](CC8=CC=C(O)C=C8)NC(=O)[C@](CSSC4)(NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CCCNC(=N)N)NC(=O)[C@H](CO)NC(=O)CNC(=O)[C@H](CO)NC(=O)[C@@H](NC([C@@H](NC([C@H]([C@H](CC)C)N)=O)CCCNC(=N)N)=O)CSSC3)[H])CCC7)[H])[H])[H])[H])[H])[H])[H])[H])[H]

[1]Steve Peigneur, et al. Active Sites of Spinoxin, a Potassium Channel Scorpion Toxin, Elucidated by Systematic Alanine Scanning. Biochemistry. 2016 May 31;55 (21) :2927-35.