Using COC(=O)C1CC(c2csc(C3CCN(C(=O)Cn4nc(C(F)F)cc4C(F)F)CC3)n2)=NO1 to produce O=C(O)C1CC(c2csc(C3CCN(C(=O)Cn4nc(C(F)F)cc4C(F)F)CC3)n2)=NO1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.