Using CSCCC(CC(=O)O)NC(=O)CCCCc1ccc(C=NN)cc1, O to produce CS(=O)CCC(CC(=O)O)NC(=O)CCCCc1ccc(C=NN)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.