Using CS(=O)(=O)OCCOc1cc(F)c(F)cc1F, CN1CCN(c2ncc[nH]c2=O)CC1 to produce CN1CCN(c2nccn(CCOc3cc(F)c(F)cc3F)c2=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.