Using BrCc1ccccc1, S=C1CN=C(c2ccccc2)c2cc(Cl)ccc2N1 to produce Clc1ccc2c(c1)C(c1ccccc1)=NCC(SCc1ccccc1)=N2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.