666816-89-3

Carbamic acid,[(3R)-1-[7-(2E)-2-butenyl-2,3,6,7-tetrahydro-3-methyl-1-[2-(2-nitrophenyl)-2-oxoethyl]-2,6-dioxo-1H-purin-8-yl]-3-piperidinyl]-, 1,1-dimethylethylester