2H-5,1-Benzothiazocine-1(6H)-carboxylic acid, 3,4-dihydro-2-oxo-6-phenyl- 6-Phenyl-1,3,4,6-tetrahydro-2H-5,1-benzothiazocin-2-one-1-carboxylic acid 6-Ptboc 85099-00-9