18 THR N 24 ILE O 1.80 18 THR H 24 ILE O 1.80 26 PHE N 16 ARG O 1.80 26 PHE H 16 ARG O 1.80 1 GLY HA2 2 TYR H 1.80 1 GLY HA3 2 TYR H 1.80