Using CC1(CC(N)=O)Cc2cc3c(cc2C1=O)CCCC3, CC1(N)Cc2ccccc2C1 to produce CC1(N)Cc2cc3c(cc2C1)CCCC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.