Using O=P(Br)(Br)Br, CCn1nc2ccc(-n3ccc(O)cc3=O)cc2c1C to produce CCn1nc2ccc(-n3ccc(Br)cc3=O)cc2c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.