Production Phase. If and only if the final Curriculum Progression Criterion, 𝑃 𝑛 is satisfied, the Production Objective, 𝑂 𝑃 , is activated. Presumably, the agent is in a state of productivity and samples compounds that satisfy the Production Objective. Balance between chemical space exploration and exploitation can be achieved by tuning hyperparameters (see Methods). The agent samples for a pre-defined number of epochs and all compounds that score above a minimum threshold are stored and outputted at the end.