Question: Show the medicine names and trade names that cannot interact with the enzyme with product 'Heme'.
Schema: create table medicine (name varchar, trade_name varchar, PRIMARY KEY (name)); create table medicine_enzyme_interaction (medicine_id varchar, enzyme_id varchar, PRIMARY KEY (medicine_id)); create table medicine (name varchar, trade_name varchar, id varchar, PRIMARY KEY (name)); create table enzyme (id varchar, product varchar, PRIMARY KEY (id))
SQL: select name, trade_name from medicine except select t1.name, t1.trade_name from medicine as t1 join medicine_enzyme_interaction as t2 on t2.medicine_id = t1.id join enzyme as t3 on t3.id = t2.enzyme_id where t3.product = 'protoporphyrinogen ix'