Using COCc1cc2c(Oc3ccc(S(C)(=O)=O)cc3)cc(C(=O)O)cc2o1, Cc1ccc(N)nc1 to produce COCc1cc2c(Oc3ccc(S(C)(=O)=O)cc3)cc(C(=O)Nc3ccc(C)cn3)cc2o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.