Using CCOC(=O)Cn1c(=O)[nH]c(=O)c2ccccc21, ClCc1ccc(Cl)cc1 to produce CCOC(=O)Cn1c(=O)n(Cc2ccc(Cl)cc2)c(=O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.