Using Ic1cn(C(c2ccccc2)(c2ccccc2)c2ccccc2)cn1, COc1cc2c(cc1C)CCC2=O to produce COc1cc2c(cc1C)CC=C2c1cnc[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.