Using O=C(O)c1cccc(C=CCC2SCC(=O)N2CCC2(O)CCCCC2)c1 to produce O=C(O)c1cccc(CCCC2SCC(=O)N2CCC2(O)CCCCC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.