上游原料
5-ethyl-2-methylpyridine5-ethyl-2-methylpyridinium5-hydroxy-2-(3-hydroxy-4-methoxyphenyl)-7-[[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-([[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl]oxy]methyl)tetrahydro-2H-pyran-2-yl]oxy]-4H-chromen-4-one7-[6-O-(6-Deoxy-2,3,4-tetra-O-sulfo-alpha-L-mannopyranosyl)-2,3,4-tetra-O-sulfo-beta-D-glucopyranosyloxy]-5-hydroxy-2-(4-methoxy-3-sulfooxyphenyl)-4H-1-benzopyran-4-one hepta-5-ethyl-2-methylpyridinium salt; 7-[6-O-(6-Deoxy-2,3,4-tetra-O-sulfo-alpha-L-mannopyranosyl)-2,3,4-tetra-O-sulfo-beta-D-glucopyranosyloxy]-5-hydroxy-2-(4-methoxy-3-sulfooxyphenyl)-4H-1-benzopyran-4-one hepta-5-ethyl-2-methylpyridinium salt