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) Cc1nnc2n1-c1sc(Br)cc1C(c1ccccc1Cl)=NC2
(b) CN1C2CCC1CC(OC(=O)C(CO)c1ccccc1)C2
Answer: a
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}