Asp–Val–Leu–Phe–His

101.54 ± 11.54^a

Asp–Val–Leu

41.93 ± 4.14^c

Asp–Val

67.46 ± 7.83^b

Leu–Phe–His

34.11 ± 9.01^c

Phe–His

104.76 ± 8.67^a