Using COC(=O)c1ccc([C@H](C)[NH3+])cc1, CC(C)(C)OC(=O)N1CCc2cccc(C(=O)O)c21 to produce COC(=O)c1ccc([C@H](C)NC(=O)c2cccc3c2N(C(=O)OC(C)(C)C)CC3)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.