Using C=CCBr, COC(=O)C1NC(=O)N(c2ccc(C=NO)cc2)C1=O to produce C=CCON=Cc1ccc(N2C(=O)NC(C(=O)OC)C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.