The molecule is the carbohydrate acid derivative anion formed from beta-D-GlcA-(1->3)-beta-D-Gal-OC6H4-4-OMe by loss of a proton from its carboxy group. It is a conjugate base of a beta-D-GlcA-(1->3)-beta-D-Gal-OC6H4-4-OMe.
(2S,3S,4S,5R,6R)-6-[(2R,3S,4S,5R,6S)-3,5-dihydroxy-2-(hydroxymethyl)-6-(4-methoxyphenoxy)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate