1149-99-1 DR-15978 ILLUDIN S Lampterol NSC400979 Spiro[cyclopropane-1,5'-[5H]inden]-7'(6'H)-one, 2',3'-dihydro-3',6'-dihydroxy-2'-(hydroxymethyl)-2',4',6'-trimethyl- Spiro[cyclopropane-1,5'-[5H]inden]-7'(6'H)-one, 2',3'-dihydro-3',6'-dihydroxy-2'-(hydroxymethyl)-2',4',6'-trimethyl-, [2'S-(2'.alpha.,3'.beta.,6'.alpha.)]-