3,9,13,19,23,29,33,39-octaoxa-1,11,21,31(2,6)-tetrapyridinacyclotetracontaphan-4,8,14,18,24,28,34,38-octaone

1-bromo-5-(2-methyl-1,3-dioxolan-2-yl)pentan-2-one

4-(2,6-diphenylthiopyran-4-ylidene)-2,6-diphenylthiopyran

1,5-bis(4-methoxyphenyl)pentane-1,5-dione

diphenyl pentanedioate