The molecule is dianion of deoxylimonoic acid D-ring-lactone arising from deprotonation of both carboxy groups. It is a conjugate base of a deoxylimonoic acid D-ring-lactone.
2-[(3R,4R,5S)-4-[(1R,6S,8aR)-1-(furan-3-yl)-5,8a-dimethyl-3-oxo-4,6,7,8-tetrahydro-1H-isochromen-6-yl]-5-(carboxylatomethyl)-4-(hydroxymethyl)-2,2-dimethyloxolan-3-yl]acetate