己酮可可碱EP杂质J
QY-JTKJ-J
(E)-1,1'-(5-methyl-7-oxoundec-5-ene-1,11-diyl)bis(3,7-dimethyl-1H-purine-2,6(3H,7H)-dione)
874747-30-5
C26H34N8O5