Observed profile of the CH and OH bands in HD 84937. For the CH bands the 1D ETL synthetic profiles (blue thin lines) have been computed with A(C) = 0.0, 6.4, and 6.7. The absorption by the wing of Hγ has been included in the computation of the G-band. The thick red line represents the best fit: A(C) = 6.60 for the UV CH feature and A(C) = 6.64 for the G-band. The synthetic profile of the OH band has been computed with A(O) = 7.0 and 7.6. The best fit is obtained with A(O) = 7.29