Lovastatin Keto Impurity

Chemical Name: (8aR)-8-(2-((2R,4S)-4-hydroxy-6-oxotetrahydro-2H-pyran-2-yl)ethyl)-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl 2-methyl-3-oxobutanoate

Smile: O=C(C(C)C(C)=O)OC1[C@@]2([H])C(C=CC(C)C2CC[C@H]3OC(C[C@@H](O)C3)=O)=CC(C)C1