Using CCOC(=O)CCn1ccc(-c2nc(N3CCC(Oc4cc(F)ccc4Br)CC3)no2)n1 to produce O=C(O)CCn1ccc(-c2nc(N3CCC(Oc4cc(F)ccc4Br)CC3)no2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.