Car cranks, will not start

The car was in good running condition, parked in my driveway for about a month. When attempt to start it, the engine cranked slow due to weak battery. After fully charged the battery still couldn't start it. Here are some of what I confirmed:

1. Spark is present at all 4 newly replaced spark plugs.
2. Fuel sprays nicely out of all 4 injectors.
3. Removed the valve cover and checked marks on timing chain, both camshafts marks and crankshaft are correct.
4. Compression test on cylinder 1, 2, 3 and 4 are: 100, 45, 50, 110.