Using O=CNc1ccc(C(c2ccc(NC=O)cc2)c2ccc(NC=O)cc2)cc1 to produce CNc1ccc(C(c2ccc(NC)cc2)c2ccc(NC)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.