SMILES: C1(=C(C(=O)C(=C(C1=O)O)O)O)O.O.O
Description: The molecule is the hydrate of tetrahydroxy-1,4-benzoquinone. The number of water molecules of crystallization (n) is variable, although most commonly the dihydrate (shown in the diagram) is formed in the solid phase. It contains a tetrahydroxy-1,4-benzoquinone.