Using CC(=O)c1ccc2c(c1)-c1nc(-c3ncnn3C(C)C)cn1CCO2 to produce CC(O)c1ccc2c(c1)-c1nc(-c3ncnn3C(C)C)cn1CCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.