Using COc1cc(-c2ccccc2C(=O)Nc2ccccc2-c2ccc(CC(=O)O)s2)cc(OC)c1OC to produce O=C(O)Cc1ccc(-c2ccccc2NC(=O)c2ccccc2-c2cc(O)c(O)c(O)c2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.