Using BrC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, CC1(C)OC2[C@H](n3cnc4c(NC5CCCC5)ncnc43)O[C@H](CC=O)[C@H]2O1 to produce CC1(C)OC2[C@H](n3cnc4c(NC5CCCC5)ncnc43)O[C@H](C/C=C/Br)[C@H]2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.