3LXG:
reference: Discovery of imidazo[1,5-a]pyrido[3,2-e]pyrazines as a new class of phosphodiesterase 10A inhibitiors., Hofgen N, Stange H, Schindler R, Lankau HJ, Grunwald C, Langen B, Egerland U, Tremmel P, Pangalos MN, Marquis KL, Hage T, Harrison BL, Malamas MS, Brandon NJ, Kronbach T, J Med Chem. 2010 Jun 10;53(11):4399-411. PMID: 20450197

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