Using CCOC(=O)CCCc1cc(C(=O)c2ccc(OC)cc2)c2ccccn12 to produce CCOC(=O)CCCc1cc(C(=O)c2ccc(O)cc2)c2ccccn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.