Using CC1C(=O)CCC(C(=O)O)C1(C)C, Cc1cc(N)cc(-c2cncs2)c1 to produce Cc1cc(N)cc(-c2cnc(C3(O)CCC(C(=O)O)C(C)(C)C3C)s2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.