Using O=C(COc1ccccc1)N[C@H]1CON(C2(C(=O)[O-])CCC(=O)O2)C1=O, CC(C)(C)C(=O)OCCl to produce CC(C)(C)C(=O)OCOC(=O)C1(N2OC[C@H](NC(=O)COc3ccccc3)C2=O)CCC(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.