Using CCOC(=O)c1c(C)n(-c2ccccc2)c(=O)c2c(C)cccc12 to produce Cc1cccc2c(C(=O)O)c(C)n(-c3ccccc3)c(=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.