Using COCCl, COC(=O)C1CC(C#N)(c2ccc(OC)c(OCC3CC3)c2)CCC1=O to produce COCOC1=C(C(=O)OC)CC(C#N)(c2ccc(OC)c(OCC3CC3)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.