Using NC(=O)[C@@H](CC(=O)NC1c2ccccc2-c2c(-c3nc4ccncc4[nH]3)cccc21)NC(=O)O to produce NC(=O)[C@H](N)CC(=O)NC1c2ccccc2-c2c(-c3nc4ccncc4[nH]3)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.