Using CCCCOc1c(NC(C)(C)C)c(=O)c1=O, NCc1c(Cl)cccc1Cl to produce CC(C)(C)Nc1c(NCc2c(Cl)cccc2Cl)c(=O)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.