Using CC(C)(C)OC(=O)N1CCOc2ccc(-c3ccc(C(=O)NCC(F)F)cc3)cc2C1 to produce O=C(NCC(F)F)c1ccc(-c2ccc3c(c2)CNCCO3)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.