Using CC1(C)COC(CC2CCc3c(n(Cc4ccccc4)c4ccccc34)S2)=N1, O=C([O-])O to produce CCOC(=O)CC1CCc2c(n(Cc3ccccc3)c3ccccc23)S1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.