1 IBC 3-(3-hydroxy-7,8-dihydro-6h-cyclohepta[D]isoxazol-4-yl)-L-alanine 1.000 2 4HT 4-hydroxytryptophan 0.737 3 V7P (2s)-2-amino-3-(6-fluoroquinolin-4-yl)propanal 0.700