2447-70-3 4H,9H-6,3,8a-Ethanylylideneazocino[4',5':3,4]furo[2,3-b]indole-6a(7H)-carboxylic acid, 5-ethylidene-1,2,5,6-tetrahydro-9-methyl-, methyl ester, (5Z)- AIDS-130161 AIDS130161 NSC381082