Using COC(=O)C1CC=C(c2c(-c3ccccc3)n(C)c3ccccc23)CC1 to produce Cn1c(-c2ccccc2)c(C2=CCC(C(=O)O)CC2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.