AIDS-150657 AIDS150657 NSC688308 [2,4'-Bioxazole]-4-carboxylic acid, 2'-[1-[2-[(1,1-dimethyl-2-propenyl)amino]-3-methyl-1-oxobutyl]-2-pyrrolidinyl]-5,5'-dimethyl-, 3-methyl-2-butenyl ester