18-methyl-2,9,21-triazapentacyclo[11.8.0.02,10.03,8.015,20]henicosa-1(13),3,5,7,9,11,14,16,18,20-decaene-11-carbonitrile 生成 18-methyl-2,9,21-triazapentacyclo[11.8.0.02,10.03,8.015,20]henicosa-1(21),3,5,7,9,11,13,15(20),16,18-decaene-11,12,14-tricarbonitrile