1,5,7,11-Tetrahydroxymethyl-6,12-bis(4-methoxyphenyl)-3,9-diazahexacyclo[6.4.0.0(2.7).0(4.11).0(5.10)]dodecane AIDS-087956 AIDS087956 Cage dimeric 4-aryl-1,4-dihydropyridine deriv.