1 31M 3'-deoxy-3'-[(L-methionyl-L-phenylalanyl)amino]adenosine 5'-(dihydrogen phosphate) 1.000 2 F3N 3'-deoxy-3'-(L-phenylalanylamino)adenosine 5'-(dihydrogen phosphate) 0.767 3 KGV 3'-deoxy-3'-(D-phenylalanylamino)adenosine 5'-(dihydrogen phosphate) 0.767