Using O=C1CCC2(CC1)OCCO2, CCCCCCOc1cccc(F)c1F to produce CCCCCCOc1ccc(C2CCC3(CC2)OCCO3)c(F)c1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.