Using NC(N)=O, CCOC(=O)C(C(=O)OCC)c1c(F)cc(F)cc1F to produce Oc1nc(O)c(-c2c(F)cc(F)cc2F)c(O)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.