Using FCCCBr, O=c1[nH]nnn1-c1cc(Oc2ncccn2)c(Cl)cc1F to produce O=c1n(CCCF)nnn1-c1cc(Oc2ncccn2)c(Cl)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.