illudin M

(3S)-2,3-Dihydro-3α,6β-dihydroxy-2,2,4,6-tetramethylspiro[5H-indene-5,1'-cyclopropan]-7(6H)-one

(3'S,6'R)-2',3'-Dihydro-3',6'-dihydroxy-2',2',4',6'-tetramethylspiro[cyclopropane-1,5'-[5H]inden]-7'(6'H)-one