Using COC(=O)[C@@H]1CCN(Cc2ncc3cc(OC)ccc3n2)C1 to produce COC(=O)[C@@H]1CCN(Cc2ncc3cc(O)ccc3n2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.