Using COc1ccc(S(=O)(=O)Cl)cc1, CC(C)(C)OC(=O)N[C@@H](CCCCNC(=O)OCC1c2ccccc2-c2ccccc21)C(=O)O to produce COc1ccc(S(=O)(=O)N[C@@H](CCCCNC(=O)OCC2c3ccccc3-c3ccccc32)C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.