Using O=P(Br)(Br)Br, CC(=O)Oc1cccc(-c2nc3ccsc3c(=O)[nH]2)c1 to produce Oc1cccc(-c2nc(Br)c3sccc3n2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.