Atomic structure
There is only one chemically distinct structure:
C/C=C1/[C@H](O[C@@H]2O[C@H](CO)[C@@H](O)[C@H](O)[C@H]2O)OC=C(C(=O)OC)[C@H]1CC(=O)OC[C@@H]1[C@H](C)[C@@H](O)C[C@H]1[C@@H](CC)CO