1. Begin with a quaternary carbon atom (C1) that is substituted with three methyl groups and one oxygen atom.
2. The oxygen attached to C1 is linked to a secondary carbon (C2) that carries a single-bonded hydroxyl group and forms a double bond with a nitrogen atom.
3. The nitrogen atom attached to C2 extends through three methylene units (-CH2-CH2-CH2-) to an additional oxygen, which connects to a fused bicyclic ring. The ring carbon attached to this oxygen is designated as C-alpha.
4. The bicyclic structure is composed of a benzene ring fused with a five-membered sulfur-containing ring (thiophene). The carbon atoms of the benzene located at the meta and para positions relative to C-alpha are shared with the thiophene. The sulfur atom in the thiophene ring, which is adjacent to the shared carbon at the meta position relative to C-alpha, bears two hydroxyl substituents (-S(OH)-OH).