Using CC1(C)Oc2ccc(C#N)cc2C(Oc2ccc(=O)[nH]n2)C1(C)O, O=C([O-])[O-] to produce Cn1nc(OC2c3cc(C#N)ccc3OC(C)(C)C2(C)O)ccc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.