3,4-diphenoxycyclobut-3-ene-1,2-dione

2,4-bis(trichloromethyl)-4H-1,3-benzodioxine-6-sulfonic acid

phenyl N-[(1E,3E)-penta-1,3-dienyl]carbamate

3-methyl-4,5-dihydro-2H-1-benzoxepin-3-ol

4-(2-hydroxyphenyl)butan-2-one