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Atomic structure
There is only one chemically distinct structure:
CN[C@@H]1[C@@H](O)[C@@H](O[C@@H]2[C@@H](O)[C@H](O[C@H]3O[C@H]([C@@H](C)N)CC[C@H]3N)[C@@H](N)C[C@H]2N)OC[C@]1(C)O