Using COC(=O)Cc1ccc(N)c(Cl)c1, Clc1cccc2sc(Br)nc12 to produce COC(=O)Cc1ccc(Nc2nc3c(Cl)cccc3s2)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.