O=C(Nc1ccccc1CS(=O)(=O)F)NC(CC1CCNC1=O)C(=O)CCl
CC(=O)NC(C(=O)NC(CC1CCNC1=O)C(=O)CCl)c1ccccc1CS(=O)(=O)F
CC(=O)NC(C(=O)NC(Cc1cccnc1)C(=O)CCl)c1ccccc1CS(=O)(=O)F
a tridentate design targeting the nucleophile, general base, and the S1 specificity pocket.