Abacopterin b

(11c)acetic acid

An oxidized polyvinyl alcohol

1,2-<em>o</em>-[3,4-dihydro-7-hydroxy-2-(4-methoxyphenyl)-6,8-dimethyl-2<em>h</em>-1-benzopyran-5,4-diyl]-β-<small>d</small>-glucopyranose

(11c)acetic acid

1,2-<em>o</em>-[3,4-dihydro-7-hydroxy-2-(4-methoxyphenyl)-6,8-dimethyl-2<em>h</em>-1-benzopyran-5,4-diyl]-β-<small>d</small>-glucopyranose