Using COC(=O)C=Cc1ccc(OCCn2c(=O)sc3cc(C(=O)c4ccccc4)ccc32)cc1 to produce COC(=O)CCc1ccc(OCCn2c(=O)sc3cc(C(=O)c4ccccc4)ccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.