Using Cc1cccc(N)n1, CC(C)(C)OC(=O)N1CCC2(CCCC2)CC1C=O to produce Cc1cccc(NCC2CC3(CCCC3)CCN2C(=O)OC(C)(C)C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.