A, D The pre-accretional organic residue (3964 molecular attributions), B, E The post-aqueous organic product after 1 day at 150 °C (3808 molecular attributions), and C, F The post-aqueous organic product after 100 days (3424 molecular attributions). The size of the circle representing each molecular attribution is proportional to ion intensities. Molecular families of these molecular attributions are colored in green for CHN, orange for CHNO, and blue for CHO. On the Van Krevelen representation are delimitated areas corresponding to aliphatic groups (Zone A), aromatic groups (Zone B), and aliphatic enriched in O groups (Zone C). H/C vs N/C diagrams corresponding to CHNO, CHO, and CHN families separately are displayed in Supplementary Fig. 2–13. The size of the circle representing each molecular attribution is proportional to ion intensities.