H-Gly-Pen-Gly-Arg-Gly-Asp-Ser-Pro-Cys-Ala-OH trifluoroacetate salt (Disulfide bond between Pen2 and Cys9)

C[C@@H] (C (=O) O) NC (=O) [C@H] (CS) NC (=O) [C@@H]1CCCN1C (=O) [C@H] (CO) NC (=O) [C@H] (CC (=O) O) NC (=O) CNC (=O) [C@H] (CCCN=C (N) N) NC (=O) CNC (=O) [C@H] (C (C) (C) S) NC (=O) CN