格式化内容附注: | v. 1. Three-, four-, and six-membered compounds containing one O, N, and S atom -- v. 2. Polycyclic five- and six-membered compounds containing one O or S atom -- v. 3. Polycyclic derivatives of pyrrole; polycyclic systems with one nitrogen common to both rings; pyrindine and related compounds -- v. 4. Quinoline, isoquinoline, and their benzo derivatives -- v. 5. Five-membered heterocycles containing two hetero atoms and their benzo derivatives -- v. 6. Six-membered heterocycles containing two hetero atoms and their benzo derivatives. |