Using O=C1C=C(c2c(-c3ccccc3)nn3ccccc23)CCN1, C=CC(=O)OC to produce COC(=O)CCN1CCC(c2c(-c3ccccc3)nn3ccccc23)=CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.