Using O=C(O)c1c(-c2ccccc2)c2cc(-n3cccc3)ccc2n1Cc1ccccc1, CCOC(=O)[C@@H](N)CC(C)C to produce CC(C)C[C@H](NC(=O)c1c(-c2ccccc2)c2cc(-n3cccc3)ccc2n1Cc1ccccc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.