Using CCOC(=O)C(O)c1ccc(NC(=O)c2ncc(C#N)[nH]2)c(C2=CCC(C)(C)CC2)c1 to produce CC1(C)CC=C(c2cc(C(O)C(=O)O)ccc2NC(=O)c2ncc(C#N)[nH]2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.