5 PHE N 2 TRP O 3.50 6 LYS N 3 LYS O 3.50 8 ILE N 5 PHE O 3.50 16 SER N 13 PHE O 3.50 18 LYS N 15 HIS O 3.50 20 PHE N 17 ALA O 3.50 5 PHE H 2 TRP O 2.50 6 LYS H 3 LYS O 2.50 8 ILE H 5 PHE O 2.50 16 SER H 13 PHE O 2.50 18 LYS H 15 HIS O 2.50 20 PHE H 17 ALA O 2.50