Table: marine pharmacognosy
Question: Which trademarked compound in the table is the most effective at treating cancer, based on the number of clinical trials conducted?
Step 1 (Operation, Indexing): trademark
Step 2 (Operation, Sorting): clinical trials β
Step 3 (Reasoning, Arithmetic): comparison, number of trials
Step 4 (Reasoning, Aggregating): MAX, number of trials
Answer: cytosar - u