Using CCOC(=O)CBr, COc1ccc(N)c(NCCN2CCC(NC(=O)OC(C)(C)C)CC2)n1 to produce CCOC(=O)CNc1ccc(OC)nc1NCCN1CCC(NC(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.