Synonyms: Illudin M(6CI,7CI); Spiro[cyclopropane-1,5'-[5H]inden]-7'(6'H)-one,2',3'-dihydro-3',6'-dihydroxy-2',2',4',6'-tetramethyl-, (3'S-trans)-;Spiro[cyclopropane-1,5'-[5H]inden]-7'(6'H)-one, 2',3'-dihydro-3'b,6'a-dihydroxy-2',2',4',6'-tetramethyl- (8CI); Illudin;Illudine M; NSC 400978; NSC 626370