Atomic structure
There is only one chemically distinct structure:
COC[C@H]1O[C@@H](O[C@@H]2[C@@H](C(=O)OC)O[C@@H](O[C@H]3CC[C@@]4(C)[C@@H](CC[C@]5(C)[C@@H]4CC=C4[C@@H]6CC(C)(C)CC[C@]6(COC)[C@H](OC)C[C@]45C)C3(C)C)[C@H](O[C@@H]3O[C@H](COC)[C@@H](OC)[C@H](OC)[C@H]3OC)[C@H]2OC)[C@H](O)[C@@H](OC)[C@H]1OC