3-(1,3-dioxo-indan-2-yl)-[1,2']biindenylidene-1',3'-dione

3-methoxy-[1,2']biindenylidene-1',3'-dione

醋酸

2,2''-ethylidene-bis-[1,2']biindenylidene-3,1',3'-trione

哌啶