The molecule contains two aromatic heterocycles: a pyridine ring (six-membered aromatic ring with one nitrogen) and a pyrazole ring (five-membered aromatic ring with two adjacent nitrogens).

- The two rings are joined by a single bond, specifically between one pyrazole nitrogen and the pyridine carbon adjacent to the pyridine nitrogen.

- The pyridine ring also carries a hydroxy group (-OH) at the para position relative to the pyridine nitrogen.