Using COc1ccc(N2C(=O)CC(=O)Nc3c2ccc2c3CCCC2)cc1 to produce O=C1CC(=O)N(c2ccc(O)cc2)c2ccc3c(c2N1)CCCC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.