Klein Organic Chemistry 2e Conceptual Checkpoint 23 09 For Each Of The Following

Hey I was wondering if someone could explain how this works . I need help with the answer

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Klein, Organic Chemistry, 2eConceptual Checkpoint 23.09For each of the following compounds, draw the form that predominates at physiological pH. The initial form has been predrawn. Modify it to draw the final product. Do not include lone pairs in your answer.HCH3Sertraline(Zoloft)An antidepressantHCH3NH2AmantadineUsed in the treatmentof Partantone’s disease