Using COc1ccc(CN2Cc3c(c(OC(c4ccccc4)c4ccccc4)c4ncccc4c3CO)C2=O)cc1, BrC(Br)(Br)Br to produce COc1ccc(CN2Cc3c(c(OC(c4ccccc4)c4ccccc4)c4ncccc4c3CBr)C2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.