Atomic structure
There is only one chemically distinct structure:
[1*]O[C@H]1[C@H](O)[C@@H](O[C@H]2O[C@H](CO)[C@@H](O)[C@H](O)[C@H]2NC(C)=O)[C@@H](O[C@H]2[C@@H](O)O[C@H](CO)[C@H](O)[C@@H]2O)O[C@@H]1COR1 = O-antigen