Atomic structure

There are 2 chemically distinct structures. Please, select:

O=C(O)[C@H]1OC(O[C@@H]2[C@@H](O)C(O[C@@H]3[C@@H](CO)OC(O)[C@H](O)[C@H]3O)O[C@H](C(=O)O)[C@@H]2O)[C@H](O)[C@@H](O)[C@@H]1O

SVG MW SMILES 3D mol Ionize

O=C(O)[C@H]1OC(O[C@@H]2[C@@H](O)C(O[C@@H]3[C@@H](CO)OC(O)[C@H](O)[C@H]3O)O[C@H](C(=O)O)[C@@H]2O)[C@H](O)[C@@H](O)[C@@H]1O

532.404 g/mol (C₁₈H₂₈O₁₈)