3-(2-Methoxy-benzo[b]thiophen-3-yl)-4-[2-methyl-5-(4-nitro-phenyl)-thiophen-3-yl]-2,5-dioxo-2,5-dihydro-pyrrole-1-carbonitrile                                                                                                                                                                                              以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 11a-Methoxy-11b-methyl-2-(4-nitro-phenyl)-4,6-dioxo-4,6,11a,11b-tetrahydro-1,11-dithia-5-aza-benzo[a]trindene-5-carbonitrile