32214-49-6 Trichochrome C alpha-Amino-2-(7-(2-amino-2-carboxyethyl)-3-carboxy-5-hydroxy-2H-1,4-benzothiazin-2-ylidene)-3,4-dihydro-5-hydroxy-3-oxo-2H-1,4-benzothiazine- 7-propanoic acid