[(1S,2S,5S,8S,9S,10R,11R,12S,13R,15R,16R,17S,18S)-7-ethyl-9,10-dihydroxy-2,12,17,18-tetramethoxy-7-azahexacyclo[7.6.2.210,13.01,8.011,15.05,16]nonadecan-5-yl]methyl 2-[(3S)-3-methyl-2,5-dioxopyrrolidin-1-yl]benzoate 2-hydroxypropane-1,2,3-tricarboxylic acid