Gosh

Update: never mind "our knowledge", what about me personally?  I see that according to a post at io9 a couple of years ago, estimates of the storage capacity of the human brain range from 300 MB (ha - too low) to 2,500 TB (seems too much.)  One simple estimate based on synapse numbers is more like 100TB.

Being generous, if we allow 300TB, I expect to be preserved in glass for at least 10 billion years.