Using CCOC(=O)C1(N(NC(=O)OCc2ccccc2)C(=O)OCc2ccccc2)CC(=O)NC1=O to produce CCOC(=O)C1(N)CC(=O)NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.