SMILES: C([C@@H]1C(=C([C@H]2[C@@H](O1)NC3=C(N2)C(=O)NC(=N3)N)[S-])[S-])OP(=O)(O)O.O=[W]=O
Description: The molecule is a W-molybdopterin cofactor in which the coordinated tungsten species is WO2. It is a conjugate acid of a WO2-molybdopterin cofactor(2-).