Retrorsine

Chemical Name: (5R,6S,9a1R,14aR,Z)-3-ethylidene-6-hydroxy-6-(hydroxymethyl)-5-methyl-3,4,5,6,9,9a1,11,13,14,14a-decahydro-[1,6]dioxacyclododecino[2,3,4-gh]pyrrolizine-2,7-dione

Smile: O=C(/C(C[C@H]([C@]1(O)CO)C)=C\C)O[C@@]2([H])[C@@]3([H])C(COC1=O)=CCN3CC2