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Atomic structure
There are 6 chemically distinct structures. Please, select:

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