Using COc1cc(CC(=O)N[C@H]2CC[C@H](C)CC2)ccc1O, ClCCBr to produce COc1cc(CC(=O)N[C@H]2CC[C@H](C)CC2)ccc1OCCCl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.