11-(4,4'-dimethoxy-benzhydrylidene)-8,9-dimethyl-1,6-bis-(4-nitro-benzenesulfonyl)-1,2,5,6-tetrahydro-2,5-methano-benzo[b][1,4]diazocine 生成 (3aR,9aS)-3-[bis(4-methoxyphenyl)methylidene]-6,7-dimethyl-4,9-bis[(4-nitrophenyl)sulfonyl]-3a,9a-dihydrocyclopenta[b]quinoxaline