Using CC(C)(C)OC(=O)NCCCBr, CC(C)(C)OC(=O)n1nc2c3cc4ccccc4cc3[nH]c(=O)n2c1=O to produce CC(C)(C)OC(=O)NCCCn1c(=O)n2c(=O)n(C(=O)OC(C)(C)C)nc2c2cc3ccccc3cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.