Ent-[Amyloid b-Protein (20-16) ]-b-Ala-D-Lys (ent-[Amyloid b-Protein (16-20) ]) trifluoroacetate salt

CC (C) C[C@H] (C (=O) N[C@H] (CCCCN) C (=O) NCCCC[C@H] (C (=O) O) NC (=O) CCNC (=O) [C@@H] (CCCCN) NC (=O) [C@@H] (CC (C) C) NC (=O) [C@@H] (C (C) C) NC (=O) [C@@H] (CC1=CC=CC=C1) NC (=O) [C@@H] (CC2=CC=CC=C2) N) NC (=O) [C@@H] (C (C) C) NC (=O) [C@@H] (CC3=CC=CC=C3) NC (=O) [C@@H] (CC4=CC=CC=C4) N.C (=O) (C (F) (F) F) O