Using CC(C)(C)OC(=O)NCCC[C@H](NCCc1ccccc1)C(=O)NCCCc1ccccc1, CC(C)(C)OC(=O)NCC(=O)O to produce CC(C)(C)OC(=O)NCCC[C@@H](C(=O)NCCCc1ccccc1)N(CCc1ccccc1)C(=O)CNC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.