Using CNc1nc(Cl)nc(C(=O)N(C)OC)c1Br, C=C[Sn](CCCC)(CCCC)CCCC to produce C=Cc1c(NC)nc(Cl)nc1C(=O)N(C)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.