Using CCOC(=O)c1nc(Nc2ccccc2)oc1-c1ccc(OC)cc1 to produce COc1ccc(-c2oc(Nc3ccccc3)nc2C(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.