Using CCOC(=O)c1c2c(nn1CCCN)-c1nc(Nc3ccccc3)ncc1CC2 to produce O=C1NCCCn2nc3c(c21)CCc1cnc(Nc2ccccc2)nc1-3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.