Using CCOCn1c(Br)nc2c1c(=O)n(CCCC[C@@H](C)OC(C)=O)c(=O)n2C, [S-2] to produce CCOCn1c(S)nc2c1c(=O)n(CCCC[C@@H](C)OC(C)=O)c(=O)n2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.