Task: Please answer the multiple choice question.
Question: Which molecules are penetrating the blood brain barrier?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: O=[N+]([O-])C1=CC=NC1NCCSCc1ncccc1Br
b: COc1ccc([C@@H]2Sc3ccccc3N(CCN(C)C)C(=O)[C@@H]2OC(C)=O)cc1
Answer: a, b
Task: Please answer the multiple choice question.
Question: Which molecules are {penetrate_BBB#not &NULL}{penetrate_BBB__names__adjective}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%penetrate_BBB%}
Answer: {%multiple_choice_result}