Using COc1cc2c(Nc3cccc(CO)c3C)c(C(N)=O)cnc2cc1O, ClCCCCBr to produce COc1cc2c(Nc3cccc(CO)c3C)c(C(N)=O)cnc2cc1OCCCCl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.