Using COC(=O)c1c[nH]c2c1CCCC2=O, CC(C)(C)OC(=O)N1CCC(O)CC1 to produce COC(=O)c1cn(C2CCN(C(=O)OC(C)(C)C)CC2)c2c1CCCC2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.