Using COC(=O)C(C(=O)O)[C@@H](CC(C)C)C(=O)N[C@H]1Cc2cn(c3ccccc23)CCCCCCNC1=O to produce CC(C)C[C@@H](C(=O)N[C@H]1Cc2cn(c3ccccc23)CCCCCCNC1=O)C(C(=O)O)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.