Please show me in that actual transaction where you see a "from address" (or any address at all).
Does this mean that the addresses cannot be deterministically computed from the above transaction data?
That depends on what you are trying to accomplish, why you are trying to accomplish it, and what additional information you are willing to access to "determine an address".
Usually when someone is looking for a "from address" they are misunderstanding how bitcoins works and attempting to do something that will result in confusion, lost bitcoins, frustrated users, and generally a mess that can be avoided by doing things properly.
I admit that I'm often mistaken, but aren't those "inputs" and "outputs" public keys corresponding to private keys that can be used to sign transactions? And there's a 1-1 mapping between keys and addresses (right?). So, in some sense, aren't those inputs and outputs in correspondence with addresses?