OAKLAND — Two men have been charged with murder in the drive-by shooting of an 18-year-old who was struck in the brain stem and died seven hours later, court records show. Daniel Ramos, 46, and Angel Pimentil, 26, have been charged with murder, shooting at an occupied motor vehicle, and shooting from an occupied motor vehicle, court records show. Ramos, the suspected shooter, has also been charged with a gun enhancement for allegedly firing the shot that killed the victim.