(2S)-[(2S,3S,4S,5S)-1,3,4,5-tetrahydroxy-4-(hydroxymethyl)piperidin-2-yl](L-tyrosylamino)acetic acid
(2s)-[(2s,3s,4s,5s)-1,3,4,5-tetrahydroxy-4-(hydroxymethyl)piperidin-2-yl](l-tyrosylamino)acetic acid