Using C=Cc1ccc2cc(NC(=O)OCc3ccccc3)c(C(=O)Nc3cnccc3N3C[C@H](C)[C@H](NC(=O)OC)[C@H](NC(=O)OC(C)(C)C)C3)nc2c1 to produce CCc1ccc2cc(N)c(C(=O)Nc3cnccc3N3C[C@@H](N)[C@@H](NC(=O)OC)[C@@H](C)C3)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.