Using COc1ccc(CNc2nc3ccc(Br)cc3cc2C=O)cc1, CCOC(=O)C(C)P(=O)(OCC)OCC to produce CCOC(=O)/C(C)=C/c1cc2cc(Br)ccc2nc1NCc1ccc(OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.