Using COC(=O)c1ccc(C)c(-c2cc3cnc(SC)nc3n(C)c2=O)c1 to produce CSc1ncc2cc(-c3cc(C(=O)O)ccc3C)c(=O)n(C)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.