Using COC(=O)c1cn(COC(=O)C(C)(C)C)c2ncc(-c3nn(C)c4ccc(S(C)(=O)=O)cc34)nc12 to produce Cn1nc(-c2cnc3[nH]cc(C(=O)O)c3n2)c2cc(S(C)(=O)=O)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.