12a-methyl-(3acC3,12ac,20at)-2,3,10,11,12,12a,20,20a-octahydro-19H-17ar,18bc-epioxido-pyrrolo[3,2-f][1,5]diazocino[3,2,1-jk;7,6,5-j'k']dicarbazole-1-carboxylic acid ethyl ester 生成 12a-methyl-(3a
tC3,9a
c,12a
t,18a
c,20a
c)-2,3,9,9a,10,11,12,12a,18a,19,20,20a-dodecahydro-18
H-9
r,18
c;17a
t,18b
t-diepioxido-pyrrolo[3,2-
f][1,5]diazocino[3,2,1-
jk;7,6,5-
j'
k']dicarbazole-1-carboxylic acid ethyl ester