The molecule is an organic anion that is the major structure of apiin at pH 7.3. It is a conjugate base of an apiin.
7-[(2S,3R,4S,5S,6R)-3-[(2S,3R,4R)-3,4-dihydroxy-4-(hydroxymethyl)oxolan-2-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2-(4-hydroxyphenyl)-4-oxochromen-5-olate