Using C=CC(=O)Nc1cccc(Oc2nc(Nc3ccc(N4C[C@@H](C)N(C(=O)OC(C)(C)C)[C@@H](C)C4)cc3)c(C(N)=O)nc2CC)c1 to produce C=CC(=O)Nc1cccc(Oc2nc(Nc3ccc(N4C[C@@H](C)N[C@@H](C)C4)cc3)c(C(N)=O)nc2CC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.