Using CCOC(=O)c1n[nH]c2ncccc2c1=O, ClCc1ccc(Cl)nc1 to produce CCOC(=O)c1nn(Cc2ccc(Cl)nc2)c2ncccc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.