161161-54-2 GR 122222X GR-122222X L-Alanine, L-alanyl-(3R)-3-hydroxy-L-prolyl-L-seryl-S-((2-carboxy-4,6-dihydroxy-3-methylphenyl)methyl)-L-cysteinyl-, (4-3)-lactone L-Alanyl-(3R)-3-hydroxy-L-prolyl-L-seryl-S-((2-carboxy-4,6-dihydroxy-3-methylphenyl)methyl)-L-cysteinyl-L-alanine (4-3)-lactone