Using N[C@H](Cc1ccc(-c2ccccc2)cc1)CC1(C(=O)O)CC1, O=C(O)c1cc(C(=O)O)[nH]n1 to produce O=C(N[C@H](Cc1ccc(-c2ccccc2)cc1)CC1(C(=O)O)CC1)c1cc(C(=O)O)[nH]n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.