Using COC1=NC=CN2NCC3=C2C1=CC(=O)[C@H]3C1CN2CCC1CC2 to produce O=C1C=C2C(O)=NC=CN3NCC(=C23)[C@@H]1C1CN2CCC1CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.