Using Cc1nc(Cl)c(N)c(NCC(N)=O)n1, O=Cc1ccccc1Cl to produce Cc1nc(Cl)c2nc(-c3ccccc3Cl)n(CC(N)=O)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.