phenylethynesulfonic acid phenylcarbamoyl-amide
(Z)-2-chloro-2-phenyl-ethenesulfonic acid phenylcarbamoyl-amide
(Z)-1-bromo-2-phenyl-ethenesulfonic acid phenylcarbamoyl-amide
(Z)-1-bromo-2-phenyl-ethenesulfonic acid amide
2-phenylethynesulfonamide