4-((5-(3,5-Dimethoxyphenyl)-2-hydroxypentyl)oxy)-5,6,7,8,9,9a-hexahydro-4bH-benzo[3,4]cyclobuta[1,2-a]cyclohepten-4b-ol compound with ethanedioic acid (1:1) AIDS-157881 AIDS157881 NSC655295 (OXALATE SALT)