4-羰基-4-(2-吡啶基)丁酸

7-[4-(1,3-dimethyl-2,6-dioxopurin-7-yl)-4-oxobutanoyl]-1,3-dimethylpurine-2,6-dione

2-methyl-1,4-dioxocane-5,8-dione

1-tributylgermylpyrrolidine-2,5-dione

二苯并[b,ghi]苝