Using CC(C)(C)OC(=O)N1CCNCC1, CC(=O)c1cc2c(c(C=O)c1O)OCO2 to produce CC(=O)c1cc2c(c(CN3CCN(C(=O)OC(C)(C)C)CC3)c1O)OCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.