4,7-Dimethyl-15-oxo-5,6-diphenyl-11,12-diazapentacyclo(8.2.2.14,7.02,9.03,8)pentadec-5-en-11,12-dicarbonsaeure-diethylester

4,7-Dimethyl-5,6-diphenyl-11,12-diazatetracyclo(8.2.2.02,9.03,8)tetradeca-4,6,13-trien-11,12-dicarbonsaeure-diethylester

乙炔

2-正丁基呋喃

丁炔二酸二甲酯