Using Nc1ncnc2c1ncn2[C@H]1CC[C@@H](CO)O1, CO to produce Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO)C[C@H]1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.