5,8-isoquinolinedione, 7-methoxy-1,6-dimethyl- 7-methoxy-1,6-dimethylisoquinoline-5,8-dione InChI=1/C12H11NO3/c1-6-10(14)8-4-5-13-7(2)9(8)11(15)12(6)16-3/h4-5H,1-3H