Eribulin Impurity 3

Chemical Name: 7,11:10,14:13,16:21,24:27,31-Pentoepoxy-2H-cyclohentriaconta[b]furan-5,18(3H,4H)-dione,2-[(2S)-3-amino-2-hydroxypropyl]octacosahydro-12,15-dihydroxy-3-methoxy-29-methyl-23,30-bis(methylene)-,(2R,3R,3aS,7R,10S,11R,12S,13S,14S,15S,16R,21S,24S,27S,29R,31R,32aS)-

Smile: CO[C@@H]([C@@H](C[C@@H](CN)O)O1)[C@@H](CC(CC2CC[C@@]3([H])[C@]([C@H](O)[C@H]4[C@@]([C@@H](O)[C@]([H])(O4)CC5=O)([H])O3)([H])O2)=O)[C@@H]1C[C@@H](O[C@@H](CC[C@H]6C(C[C@H](CC5)O6)=C)C[C@H]7C)C7=C