Using CCCCCCCCCCCCCCNC(=O)[C@@H](N)CC(=O)OCc1ccccc1, CC(=O)NCCCCCC(=O)NCCCCCC(=O)O to produce CCCCCCCCCCCCCCNC(=O)[C@H](CC(=O)OCc1ccccc1)NC(=O)CCCCCNC(=O)CCCCCNC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.