Using CCOC(=O)N1CCN(c2nc(N(C(C)=O)C3CC3)ccc2F)CC1 to produce CCOC(=O)N1CCN(c2nc(NC3CC3)ccc2F)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.