1146-04-9 BRN 2286081 CCRIS 3539 DR-15977 Illudin M Illudine M NSC 400978 NSC 626370 Spiro(cyclopropane-1,5'-(5H)inden)-7'(6'H)-one, 2',3'-dihydro-3'-beta,6'-alpha-dihydroxy-2',24',6'-tetramethyl-