Using CC(C)(C)OC(=O)N[C@H]1CCc2ccc(OCC(=O)O)cc2C1, C1CCNCC1 to produce CC(C)(C)OC(=O)N[C@H]1CCc2ccc(OCC(=O)N3CCCCC3)cc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.