Using S=C=Nc1cccc(Cl)c1, NNC(=O)c1ccc2nc(-c3c(Cl)cccc3Cl)[nH]c2c1 to produce Clc1cccc(Nc2nnc(-c3ccc4nc(-c5c(Cl)cccc5Cl)[nH]c4c3)o2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.