Using O=C(NC(=O)c1ccccc1)NC1CCN(Cc2c[nH]c3ccccc23)CC1 to produce NC(=O)NC1CCN(Cc2c[nH]c3ccccc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.