3-((Tetrahydro-2H-pyran-2-yloxy)methyl)-5,6-dihydro-4H-pyrrolo[1,2-c][1,2,3]triazole 5,6-Dihydro-4H-pyrrolo[1,2-c][1,2,3]triazol-3-ylmethyl tetrahydro-2H-pyran-2-yl ether AIDS-131400 AIDS131400 NSC623687