Extended Data Fig. 3: Screenshots of the process of predicting accumulation using the web tool eNTRyway.

SMILES strings are submitted to eNTRyway, and compounds are prioritized for evaluation based on how closely they meet the eNTRy rules. In the example here, both ampicillin and 6-DNM-NH₃ meet all of the criteria and are predicted to accumulate, whereas penicillin and DNM are not. A portion of this figure is taken from Parker et al.¹⁹ with permission.