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 other words.
Options:
a: CN(C(=O)Cc1ccc(Cl)c(Cl)c1)[C@@H](CN1CCCC1)c1ccccc1
b: OCCN1CCN(CC/C=C2/c3ccccc3Sc3ccc(Cl)cc32)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}