Atomic structure
There is only one chemically distinct structure:
[1*]O[C@H]1O[C@H](C)[C@@H](NC=O)[C@H](O)[C@@H]1O[C@H]1O[C@H](C)[C@@H](NC=O)[C@H](O[C@H]2O[C@H](C)[C@@H](NC=O)[C@H](O)[C@@H]2O[C@H]2O[C@H](C)[C@@H](NC=O)[C@H](O)[C@@H]2O)[C@@H]1OR1 = O-antigen (ID 11994)