Using COc1ccc(CSc2cc(NC(=S)NC(=O)c3ccccc3)ncc2Br)cc1 to produce COc1ccc(CSc2cc(NC(N)=S)ncc2Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.