Using COc1ccc(Nc2cc3c(cc2Nc2ccccc2)C(=O)NC3=O)cc1 to produce O=C1NC(=O)c2cc(Nc3ccc(O)cc3)c(Nc3ccccc3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.