Using CCn1c(-c2ccc(O)c(O)c2)cc(=Nc2c(C)cc(C)cc2C)n(C)c1=O, BrCCBr to produce CCn1c(-c2ccc3c(c2)OCCO3)cc(=Nc2c(C)cc(C)cc2C)n(C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.