Using CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1c1c(OC)ccc2ccccc12 to produce CCOC(=O)C1=C(C)NC2(C)Oc3ccc4ccccc4c3C1C2C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.