Using CCOC(=O)C(Cc1cnc(Nc2ccccc2)nc1Nc1ccccc1)c1cccnc1 to produce O=C1C(c2cccnc2)Cc2cnc(Nc3ccccc3)nc2N1c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.