Need SNMP MIB for Dell Compellent SC8000

I have some Compellent SC8000 units.  I would like to get SNMP information from the devices. 

I am getting SNMP data with OIDs similar to:

1.3.6.1.4.1.674.11000.2000.500.1.2.3.0

I cannot find the MIB anywhere on the internet (including Dell support site) for that data.

I want to pull serial number, service tag, driver state, etc.  I know service tag is in there.

Does anyone know which MIB that is in and where to find it?