E52-IC50AYD4.84M E52-IC50AYD6.44M E52-IC50B-N D=6.4 E52-IC50B-ND6.4 E52-IC50C D=12 E52-IC50C D=4.8 E52-IC50C D=6.4 E52-IC50C D3.2 E52-IC50C-N D=12 E52-IC50C-N D=3.2