phenyl (1S,5R,8Z,12S,20S)-5-hydroxy-21-oxa-13-azapentacyclo[10.9.0.01,20.05,20.014,19]henicosa-8,14,16,18-tetraen-6,10-diyne-13-carboxylate 生成
phenyl (1S,5S,8Z,12S,20R)-21-oxa-13-azapentacyclo[10.9.0.01,20.05,20.014,19]henicosa-8,14,16,18-tetraen-6,10-diyne-13-carboxylate