Using CCSC(C)CC1CC(=O)C(C(=O)CC)C(=O)C1C, C=CCON to produce C=CCONC(CC)=C1C(=O)CC(CC(C)SCC)C(C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.