1-Ethynylnaphthalene pound 4a dihydrochloride InChi: InChI=1S/C36H50N2O10/c1-41-16-17-43-20-21-45-24-25-47-28-29-48-27-26-46-23-22-44-19-18-42-15-14-37-35(39)12-13-36(40)38-30-33-8-3-2-6-31(33)10-11-32-7-4-5-9-34(32)38/h2-9H
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