甲醇

(5S,8S,9R)-8-benzoyl-2-((2S,4S,5S)-(Z)-5-(but-1-enyl)-2-methyl-[1,3]dioxolan-4-yl)-8,9-dihydroxy-3-methyl-1-oxa-7-azaspiro[4.4]non-2-ene-4,6-dione

8-O-demethylpseurotin A

5,6-dideoxy-1,2-O-isopropylidene-α-D-erythro-hexofuranos-3-ulose