Using O=C(O)c1ccc(C(c2cc(F)ccc2F)S(=O)(=O)c2ccc(Cl)cc2)nc1, NCCO to produce O=C(NCCO)c1ccc(C(c2cc(F)ccc2F)S(=O)(=O)c2ccc(Cl)cc2)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.