143651-45-0 Benarthin L-Threonine, N-(N(sup 2)-(2,3-dihydroxybenzoyl)-L-arginyl)- L-Threonine, N-(N2-(2,3-dihydroxybenzoyl)-L-arginyl)- N-(N(sup 2)-(2,3-Dihydroxybenzoyl)-L-arginyl)-L-threonine