Using O, O=C(NCC(Sc1ccccc1)c1ccc(Br)o1)c1ccccn1 to produce O=C(NCC(c1ccc(Br)o1)S(=O)c1ccccc1)c1ccccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.