Using CSc1nccc(Cl)n1, O=c1cc(-c2ccccc2)cc2n1CCCN2 to produce CSc1nccc(N2CCCn3c2cc(-c2ccccc2)cc3=O)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.