Using CCCOc1nc(S(C)(=O)=O)nc2oc(-c3cccc(C)c3)nc12, C=C([Mg]Br)c1ccccc1 to produce C=C(c1ccccc1)c1nc(OCCC)c2nc(-c3cccc(C)c3)oc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.