Fig. 3. Molecular structure of 19 - ORTEP view, 50% probability. Selected interatomic distances (Å): O1-C6 1.431(4), C1′-C2′ 1.402(4), C1′-C6′ 1.411(5), C1′-C7 1.516(4), N1-C8 1.462(5), N1-C7A 1.484(4), N1-C2 1.484(4), C2′-C3′ 1.399(4), C2′-C9 1.521(5), C2-C3 1.523(5), O2-C9 1.422(4), C3-C3A 1.518(5), C3′-C4′ 1.363(5), O3-C4′ 1.386(4), O3-C10 1.427(4), C4-C3A 1.312(5), C4-C5, 1.502(5), O4-C5′ 1.384(4), O4-C10 1.437(4), C4′-C5′ 1.378(5), C5-C6 1.524(5), C5′-C6′ 1.369(5), C7-C7A 1.535(4), C7-C6 1.542(5), C3A-C7A 1.508(5). ; Published as part of Hulcová, Daniela, Maříková, Jana, Korábečný, Jan, Hošťálková, Anna, Jun, Daniel, Kuneš, Jiří, Chlebek, Jakub, Opletal, Lubomír, Simone, Angela De, Nováková, Lucie, Andrisano, Vincenza, Růžička, Aleš & Cahlíková, Lucie, 2019, Amaryllidaceae alkaloids from Narcissus pseudonarcissus L. cv. Dutch Master as potential drugs in treatment of Alzheimer's disease, pp. 1-9 in Phytochemistry 165 on page 4, DOI:10.1016/j.phytochem.2019.112055, http://zenodo.org/record/10483285