Using COCOc1cccc(-c2ccc3c(c2COC(=O)c2ccccc2)C(C)=CC(C)(C)N3)c1OC to produce COc1c(O)cccc1-c1ccc2c(c1COC(=O)c1ccccc1)C(C)=CC(C)(C)N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.