Using O=C1Nc2ncccc2C12Cc1cc3ncc(CO)nc3cc1C2 to produce O=Cc1cnc2cc3c(cc2n1)CC1(C3)C(=O)Nc2ncccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.