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https://www.ncbi.nlm.nih.gov/Structure/pdb/7CM1 7CM1: Neuraminidase from the Wuhan Asiatic toad influenza virus Neuraminidase(3R,4R,5S)-4-(acetylamino)-5-amino-3-(pentan-3-yloxy)cyclohex-1-ene-1-carboxylic acidCALCIUM ION from theasiatic toadneuraminidasewuhaninfluenza