1 4LF N-[2-[2,5-bis(oxidanylidene)pyrrol-1-yl]ethyl]-2,3-bis(oxidanyl)benzamide 1.000 2 SZN N-[2-(2,5-dioxopyrrolidin-1-yl)ethyl]-3-methylbenzamide 0.857 3 SYZ N-(2-(2,4-dioxothiazolidin-3-yl)ethyl)-3-methylbenzamide 0.773 4 T4H 3-chloro-N-[2-(2,4-dioxo-1,3-thiazolidin-3-yl)ethyl]benzamide 0.773