Task: Please answer the multiple choice question.
Question: Which molecules are penetrating the blood brain barrier to reach the brain?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a. CC(C)n1cc2c3c(cccc31)C1C[C@@H](C(=O)NC3CCCCC3)CN(C)C1C2
b. O=C1CN=C(C2=CCCCC2)c2cc(Cl)ccc2N1
c. CC1C2Cc3ccc(O)cc3C1(C)CCN2CCc1ccccc1
Answer: a, b, c
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}