Using COCOc1cc(C)c(Br)c2ccc(=O)[nH]c12, CCCCC([Sn])=C(CCCC)CCCC to produce C=Cc1c(C)cc(OCOC)c2[nH]c(=O)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.