Atomic structure
There are 4 chemically distinct structures. Please, select:

CCCCCCCCCCCCCC/C=C/C(O)C(=O)N[C@@H](COC1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O)[C@H](O)/C=C/CC/C=C(\C)CCCCCCCCC