The molecule is a furofuran that is (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol in which the hydroxyl hydrogen is replaced by a glycolate group. It is a furofuran, a cyclic acetal and a glycolate ester.
[(3aS,4R,6aR)-2,3,3a,4,5,6a-hexahydrofuro[2,3-b]furan-4-yl] 2-hydroxyacetate