Using CCOC(=O)C1(NC(=O)c2cccc3c2CCCC3=O)Cc2ccccc2C1 to produce O=C1CCCc2c1cccc2C(=O)NC1(C(=O)O)Cc2ccccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.