Using O=Cc1ccc(Br)cc1, Cc1oc(-c2ccccc2)nc1C[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce Cc1oc(-c2ccccc2)nc1/C=C/c1ccc(Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.