Using Cc1cc(C)c(-c2cccc3c2c(=O)c(Br)cn3Cc2ccccc2)c(C)c1, CB(O)O to produce Cc1cc(C)c(-c2cccc3c2c(=O)c(C)cn3Cc2ccccc2)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.