Using CSc1nc(C)nc(Cl)n1, OB(O)c1cc(C2OCCO2)cnc1F to produce CSc1nc(C)nc(-c2cc(C3OCCO3)cnc2F)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.