Using COCn1c(=O)c2c(c3c(OC)cc(/C=N/N4CCOCC4)cc31)NCCC2 to produce COCn1c(=O)c2c(c3c(OC)cc(CNN4CCOCC4)cc31)NCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.