sialic acid (n-acetylneuraminic acid, neu5ac, nana) molecule. 3d rendering. atoms are represented as spheres with conventional

sialic neuraminic acid nacetylneuraminic neu5ac nana glycosylation sialo sialyl sialate sialidase sialidosis food supplement brain salla disease hydrogen carbon nitrogen oxygen molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula 3d rendering illustration