Using CCOC(=O)CC1Cc2ccc(OCc3cccc(Cl)c3)cc2NC1=O to produce CCOC(=O)Cc1cc2ccc(OCc3cccc(Cl)c3)cc2[nH]c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.