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ENT2inhibitor pharmacophore correlation (A) and mapping of 2,6-Bis(diethanolamino)-4,8-diisopropylamino-pyrimido[5,4-day]pyrimidine (B) to this pharmacophore. Cyan features represent hydrogen bond donors, green features represent hydrogen bond acceptors, and gray features represent excluded volumes. HBA, hydrogen bond acceptor; RMS, root mean square.
