Using Fc1cccc([Mg]Br)c1, N#CC1(N2CCC2)CCC2(CC1)OCCO2 to produce Fc1cccc(C2(N3CCC3)CCC3(CC2)OCCO3)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.