Using CC(C)(C)OC(=O)n1ncc2cc(Nc3nc(-c4cccc(N)c4)nc4ccccc34)ccc21, C[C@@H](C(=O)O)C(=O)OC(C)(C)C to produce C[C@@H](C(=O)Nc1cccc(-c2nc(Nc3ccc4c(cnn4C(=O)OC(C)(C)C)c3)c3ccccc3n2)c1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.