Using Cc1nc(-c2cc3c(cn2)cnn3-c2cccc(N3CCCN(C(=O)OC(C)(C)C)CC3)n2)cnc1N to produce Cc1nc(-c2cc3c(cn2)cnn3-c2cccc(N3CCCNCC3)n2)cnc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.