AIDS-136729 AIDS136729 Dispiro[1,3-dioxolane-2,1'(4'H)-benz[b]indeno[5,4-d]pyran-4',2''-[1,3]dioxolane], 2',3',3'a,3'b,9'b,10',11',11'a-octahydro-7'-methoxy-11'a-methyl- NSC639633