Using NCc1nccs1, Cn1cc(-c2ccc3c(Cl)nc4ccnc(Cl)c4c3c2)cn1 to produce Cn1cc(-c2ccc3c(NCc4nccs4)nc4ccnc(Cl)c4c3c2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.