Using CCOC(=O)C1(NC(=O)c2cccc(C)c2I)Cc2ccccc2C1, OB(O)C1=CCCC1 to produce CCOC(=O)C1(NC(=O)c2cccc(C)c2C2=CCCC2)Cc2ccccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.