I saw a BBC report on this and looked up the paper in Nature Astronomy. It was published today: https://www.nature.com/articles/s41550-024-02472-9 It seems samples contain not only 14 out of the 21 amino acids (though racemic rather than showing a chiral preference), but also all 5 of the nucleobases found in RNA and DNA. So a lot of nitrogen-rich molecules. The authors suggest this points to reactions occurring in a low temperature regime, possibly one in which ammonia ice was stable, e.g.