Using O=C(Nc1ccc(OC(F)(F)Cl)cc1)c1cnc(Cl)c(-c2cncnc2)c1, OC1CCOCC1 to produce O=C(Nc1ccc(OC(F)(F)Cl)cc1)c1cnc(OC2CCOCC2)c(-c2cncnc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.