Synonyms: Penitrem A,23,24-deepoxy-23,24-didehydro-15-deoxy-;7,8-(Epoxymethano)-4bH-1-benzopyrano[5',6':6,7]indeno[1,2-b]cyclobuta[5,6]benz[1,2-e]indole-3,4b-diol,12-chloro-2,3,5,6,6a,7,7d,8,9,9a,10,11,14,14b,14c,15,16,16a-octadecahydro-14b,14c,17,17-tetramethyl-10-methylene-2-(1-methylethenyl)-,[2R-(2a,3a,4bb,6aa,7a,7db,8b,9ab,14bb,14ca,16ab)]-; Penitrem C; Tremortin C