The molecule is a fused bicyclic system. The first ring is a benzene ring bearing two substituents:
- at carbon 1, a difluoromethoxy group (-O-CH(F)2);
- at carbon 4, a carboxylic acid group (-COOH).

The second ring is fused to the benzene at carbons 2 and 3. Moving from benzene carbon 2 into the second ring, one first encounters an oxygen, then a methylene group (-CH2-), and then a carbon that bears a hydroxyl group and is double-bonded to a nitrogen. This nitrogen closes the second ring by attaching back to benzene carbon 3.