Eribulin Impurity 2

Chemical Name: 11,15:18,21:24,28-triepoxy-7,9-ethano-12,15-methano-9H,15H-furo[3,2-i]furo[2’,3’:5,6]pyrano[4,3-b][1,4]dioxacyclopentacosin-5(4H)-one,2-[(2S)-2,3-dihydroxypropyl]hexacosahydro-3-methoxy-26-methyl-20,27-bis(methylene)-,(2R,3R,3aS,7R,8aS,10aR,11S,12R,13aR,13bS,15S,18S,21S,24S,26R,28R,29aS)-