Ivermectin B1a

Chemical Name: 5-O-Demethyl-22,23-dihydro-avermectin A1a

Smile: O=C1[C@]([C@]/23O)([H])C=C(C)[C@@H](O)[C@@]3([H])OCC2=C/C=C/[C@H](C)[C@H](O[C@@H]4O[C@@H](C)[C@H](O[C@@H]5O[C@@H](C)[C@H](O)[C@@H](OC)C5)[C@@H](OC)C4)/C(C)=C/C[C@@](C6)([H])O[C@]7(O[C@H]([C@H](CC)C)[C@@H](C)CC7)C[C@@]6([H])O1