Atomic structure
There is only one chemically distinct structure:
[*]O[C@@H]1[C@@H](C(=O)O)O[C@H](O[C@@H]2[C@@H](COS(=O)(=O)O)O[C@H]([*])[C@H](NS(=O)(=O)O)[C@H]2O)[C@H](OS(=O)(=O)O)[C@H]1O