Using CCOC(=O)C=CC1CCC2CC=CC=C2N1C(=O)C(=O)OCC to produce CCOC(=O)CCC1CCC2CC=CC=C2N1C(=O)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.