Using O=C(CC(=O)N1CCOCC1)c1cccc(OS(=O)(=O)C(F)(F)F)c1O to produce O=c1cc(N2CCOCC2)oc2c(OS(=O)(=O)C(F)(F)F)cccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.