UDP-2-acetamido-2,6-dideoxy-beta-L-lyxo-hex-4-ulose => UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-hex-4-ulose
udp-2-acetamido-2,6-dideoxy-beta-l-lyxo-hex-4-ulose => udp-2-acetamido-2,6-dideoxy-beta-l-arabino-hex-4-ulose
UDP-2-acetamido-2,6-dideoxy-beta-L-lyxo-hex-4-ulose => UDP-2-acetamido-2,6-dideoxy-beta-L-arabino-hex-4-ulose
udp-2-acetamido-2,6-dideoxy-beta-l-lyxo-hex-4-ulose => udp-2-acetamido-2,6-dideoxy-beta-l-arabino-hex-4-ulose