Using O=c1c(I)cc(Cc2ccc(F)cc2F)cn1Cc1ccccc1F, CCCC[Sn](C=COCC)(CCCC)CCCC to produce CC(=O)c1cc(Cc2ccc(F)cc2F)cn(Cc2ccccc2F)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.