Using COc1ccc2c(c1)c1c(n2C(=O)c2ccccc2)CCCC1C(=O)OCc1ccccc1 to produce COc1ccc2c(c1)c1c(n2C(=O)c2ccccc2)CCCC1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.