Using CCOC(=O)CN1C(=O)C(=Cc2cc(C(C)(C)C)c(O)c(C(C)(C)C)c2)Sc2ccccc21, N to produce CC(C)(C)c1cc(C=C2Sc3ccccc3N(CC(N)=O)C2=O)cc(C(C)(C)C)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.