The molecule is dianion of maltose 6'-phosphate arising from deprotonation of both OH groups of the phosphate. It is a conjugate base of an alpha-maltose 6'-phosphate.
[(2R,3S,4S,5R,6R)-3,4,5-trihydroxy-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl phosphate