Showing structure for (5r,8s,9s)-8-benzoyl-2-[(1r,2s,3z)-1,2-dihydroxyhex-3-en-1-yl]-6,9-dihydroxy-8-methoxy-3-methyl-1-oxa-7-azaspiro[4.4]nona-2,6-dien-4-one