1 A1J 3-(5,7,7-trihydroxy-2,2,7-trioxo-6-oxa-2lambda~6~-thia-3-aza-7lambda~5~-phospha-5-boraheptan-1-yl)benzoic acid 1.000 2 OZF 3-[(4s)-4-ethyl-5,7,7-trihydroxy-2,2,7-trioxo-6-oxa-2lambda~6~-thia-3-aza-7lambda~5~-phospha-5-boraheptan-1-yl]benzoic acid 0.917 3 OZO 3-[(4r)-4-ethyl-5,7,7-trihydroxy-2,2,7-trioxo-6-oxa-2lambda~6~-thia-3-aza-7lambda~5~-phospha-5-boraheptan-1-yl]benzoic acid 0.917 4 0N3 3-({[(dihydroxyboranyl)methyl]sulfamoyl}methyl)benzoic acid 0.739