(1aS,3aR,6bR)-5-methoxy-1-oxo-1a,2,3,3a,4,6b-hexahydro-1H-2,6a-diazacyclobut[cd]indene-6-carboxylic acid trifluoroacetate 生成
(1aS,3aR,6bR)-2-Acetyl-5-methoxy-1-oxo-1a,2,3,3a,4,6b-hexahydro-1H-2,6a-diazacyclobut[cd]indene-6-carboxylic acid sodium salt