. "nagstatin" . "Nagstatin" . . "2-[(5R,6S,7R,8S)-8-acetamido-6,7-dihydroxy-5-(hydroxymethyl)-5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-3-yl]acetic acid" . . . . . . . . . . . . "Nagstatin" .