Using OB(O)c1ccccc1Cl, CC(C)(C)OC(=O)n1nc(I)c2cnc(Oc3ccc(F)cc3F)cc21 to produce CC(C)(C)OC(=O)n1nc(-c2ccccc2Cl)c2cnc(Oc3ccc(F)cc3F)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.