Begin with a six-member aromatic ring. Label its atoms 1 through 6 so that positions 4 and 6 are nitrogens and the others (1, 2, 3, 5) are carbons. At carbon-5 of the aromatic ring, place a chlorine substituent. At carbon-3, attach a saturated five-membered lactam ring (one nitrogen and four carbons) via the lactam's nitrogen; the lactam has its carbonyl on the ring carbon adjacent to the nitrogen (i.e., a 2-pyrrolidinone-type ring). No other substituents or stereochemical centers are present.