Using COc1ccc(-c2c[nH]c(NC(=O)OC(C)(C)C)n2)c2sc(NC(=O)O)nc12 to produce COc1ccc(-c2c[nH]c(N)n2)c2sc(NC(=O)O)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.