英文名称
2-Butenoic acid, 2-methyl-, (E)-, monoester with (1aR-(1aalpha,1bbeta,4abeta,7aalpha,7balpha,8alpha,9beta,9aalpha))-1b,4,5,7a,8,9-hexahydro-3-(hydroxymethyl)-1,1,6,8-tetramethyl-1H-cyclopropa(3,4)benz(1,2-e)azulene-4a,7b,9,9a(1aH)-tetrol monoacetate