Using O=C(Cl)c1ccc(Cl)cc1, COC(=O)Cc1n[nH]c2ccccc12 to produce COC(=O)Cc1nn(C(=O)c2ccc(Cl)cc2)c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.