Using CCOC(=O)C([PH2]=O)=C(C)C(OCC)OCC, O=CC1=C(Br)CCC1 to produce CCOC(=O)/C=C(C)/C=C/C1=C(Br)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.