IUPAC:(1S,2S,3Z)-1-(acetyloxy)-1-[(5S,8S,9R)-9-(acetyloxy)-8-benzoyl-8-methoxy-3-methyl-4,6-dioxo-1-oxa-7-azaspiro[4.4]non-2-en-2-yl]hex-3-en-2-yl acetate
IUPAC:(1S,2S,3Z)-1-(acetyloxy)-1-[(5S,8S,9R)-9-(acetyloxy)-8-benzoyl-8-methoxy-3-methyl-4,6-dioxo-1-oxa-7-azaspiro[4.4]non-2-en-2-yl]hex-3-en-2-yl acetate