Using COC(=O)c1ccc(OCCCCCOc2ccc(C#N)cc2)c(OC)c1 to produce COc1cc(C(=O)O)ccc1OCCCCCOc1ccc(C#N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.