SMILES: C[C@H]1CC[C@]2(C[C@@H]3C[C@H](O2)C/C=C(/[C@H]([C@H](/C=C/C=C/4\\CO[C@H]5[C@@]4([C@@H](C=C([C@H]5O)C)C(=O)O3)O)C)O[C@H]6C[C@@H]([C@H]([C@@H](O6)C)O[C@H]7C[C@@H]([C@H]([C@@H](O7)C)O)OC)OC)\\C)O[C@@H]1C(C)C
Description: The molecule is a macrocyclic lactone that is avermectin B1b in which the double bond present in the spirocyclic ring system has been reduced to a single bond. It is the minor component of ivermectin. It is a macrocyclic lactone and a spiroketal. It derives from an avermectin B1b.