Acknowledging that Evan's suggested technique is right now actionable, I would still like to get the thoughts of the community on having NDC-vocabulary-specific concept class for DEASchedule. That is, DEA schedule as class in its own right within NDC vocab. Any comments on this? Having such modeling of the DEA schedule can readily serve use cases that require tossing out certain formulations of a drug from a study on addictive effects, as in cases when particular formulations are assigned a different schedule. Any thoughts against or for this? or an alternate recommendation?