Using S=c1cc(N2CCOCC2)ss1, COc1ccc(C(=O)CBr)cc1 to produce COc1ccc(C(=O)CSc2cc(=[N+]3CCOCC3)ss2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.