123580-52-9 Lew 7-S1 Lew 7S1 Piperazine, 1-((5-(7-((6-O-(6-deoxy-alpha-L-mannopyranosyl)-beta-D-glucopyranosyl)oxy)-5-hydroxy-4-oxo-4H-1-benzopyran-2-yl)-2-methoxyphenoxy)acetyl)-4-((2,3,4-trimethoxyphenyl)methyl)-, (R-(R*,R*))-2,3-dihydroxybutanedioic acid (2:1) (salt)