SMILES: C[C@H]1[C@@H]([C@@]2(C[C@@H](CO2)O)O[C@@H]3[C@@H]1O[C@H]4C[C@H]([C@@H](O[C@@H]4[C@H]([C@@H]3O)C)CC(=O)C)O)C
Description: The molecule is a polycyclic ether comprising a central oxepine ring flanked by two fused tetrahydropyran rings together with a spiro-fused tetrahydrofuran ring. Corresponds to the JKLM ring fragment and epitope of ciguatoxin. It has a role as an epitope.