Using CCOC(C)=O, C=C1CCCC1C(=O)C(C)(C)N1COC(C)=C(c2ccccc2)C1=O to produce C=C1CCCC1C(=O)C(C)(C)N1COC(CC)=C(c2ccccc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.