Using Cc1c(Cl)cncc1Cl, COc1ccc2c(Cl)nncc2c1Cc1ccncc1 to produce COc1ccc2c(Cc3c(Cl)cncc3Cl)nncc2c1Cc1ccncc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.