Using CCOC(=O)C(C)(C)n1cc(-c2ccc3c(c2)OCCn2cc(-c4ncnn4C(C)C)nc2-3)cn1 to produce CC(C)n1ncnc1-c1cn2c(n1)-c1ccc(-c3cnn(C(C)(C)C(=O)O)c3)cc1OCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.