6H9B:
reference: 1,1-Diheterocyclic Ethylenes Derived from Quinaldine and Carbazole as New Tubulin Polymerization Inhibitors: Synthesis, Metabolism, and Biological Evaluation., Naret T, Khelifi I, Provot O, Bignon J, Levaique H, Dubois J, Souce M, Kasselouri A, Deroussent A, Paci A, Varela PF, Gigant B, Alami M, Hamze A, J Med Chem. 2018 Dec 10. doi: 10.1021/acs.jmedchem.8b01386. PMID: 30525602

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