Using COc1cccc(-c2ccc3c(c2)NC(=O)C3=Cc2[nH]c(C(=O)O)c(C)c2CCC(=O)O)c1 to produce COc1cccc(-c2ccc3c(c2)NC(=O)C3=Cc2[nH]cc(C)c2CCC(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.