Using CN(C)C=O, COc1c(Br)c2c(c(Sc3ccccc3)c1OC)CCN(C)CC2 to produce COc1c(C=O)c2c(c(Sc3ccccc3)c1OC)CCN(C)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.