Using C=O, COc1cc2c(cc1OCc1ccccc1)C(C1(c3ccccc3Cl)CC1)NCC2 to produce COc1cc2c(cc1O)C(C1(c3ccccc3Cl)CC1)N(C)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.