Using COC(=O)c1c(Cn2c(SC)nc3ncccc32)sc2c1c(=O)n(C)c(=O)n2CC(C)C to produce CSc1nc2ncccc2n1Cc1sc2c(c1C(=O)[O-])c(=O)n(C)c(=O)n2CC(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.