dimethyl 2,12-dibromo-14,19-dioxodecacyclo[9.9.0.01,8.02,15.03,7.05,12.06,10.011,18.013,17.016,20]icosane-4,9-dicarboxylate 生成
2,4-anti,12-Tribrom-14,19-dioxo-decacyclo<9.9.0.01,8.02,15.03,7.05,12.06,10.011,18.013,17.016,20>icosan-4-syn,9-syn-dicarbonsaeure-dimethylester