Using CC(C)(C)OC(=O)N1CCC(CNc2cc(-c3ccccc3Cl)nc3c(Br)cnn23)CC1 to produce Clc1ccccc1-c1cc(NCC2CCNCC2)n2ncc(Br)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.