Using CCOP(=O)(OCC)C1(P(=O)(OCC)OCC)C=C2C=C(Br)CNC2=C1 to produce CCOP(=O)(OCC)C1(P(=O)(OCC)OCC)C=c2cccnc2=C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.