Dibenzo[a,c]cyclododecene, 5,6,11,12-tetradehydro-7,8,9,10-tetrahydro-

Naphtho[1,8',8:c,d]cycloundeca-1,5-diyne

四氢噻吩

甲基1-乙酰基环戊烷羧酸酯

5-butyl-2,3-dihydropyran-6-one