Using CCCCCCCCNC(CC)C(O)c1ccc(SC(C)C)cc1, CC(=O)OC(C)=O to produce CCCCCCCCNC(CC)C(OC(C)=O)c1ccc(SC(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.