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Atomic structure
There is only one chemically distinct structure:
CO[C@H]1[C@@H](O)[C@H](O)[C@H](OC[C@@]23C[C@@H]4[C@H](C)CC[C@H]4[C@@]4(C=O)C[C@@H]2C=C(C(C)C)[C@]43C(=O)O)O[C@@H]1C