Synonyms: 3-Methoxy-19-norcarda-1,3,5(10)-trienolide;19-Norcarda-1,3,5(10)-trienolide, 3-methoxy-;AC1L57BP;LS-97253;(4R)-4-[(8S,9S,13S,14R,17R)-3-methoxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl]oxolan-2-one;4147-08-4