5H-cyclopenta[c]pyridin-5-one, 6,7-dihydro-7-methyl- 7-methyl-6,7-dihydro-5H-cyclopenta[c]pyridin-5-one InChI=1/C9H9NO/c1-6-4-9(11)7-2-3-10-5-8(6)7/h2-3,5-6H,4H2,1H