(E)-8-(4-Methoxy-2,5-dimethylstyryl)-1,3-dipropylxanthine 151539-37-6 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dipropyl-8-(2-(4-methoxy-2,5-dimethylphenyl)ethenyl)-, (E)-