Synonyms: 5-[4-(Benzyloxy)-3-methoxyphenyl]-2-(isopropylsulfanyl)-5,8,9,10-tetrahydropyrimido[4,5-b]quinoline-4,6(3H,7H)-dione;pyrimido[4,5-b]quinoline-4,6(3H,7H)-dione, 5,8,9,10-tetrahydro-5-[3-methoxy-4-(phenylmethoxy)phenyl]-2-[(1-methylethyl)thio]-