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, c, or d without using any additional words.
Options:
a. C[N+]1([O-])C2CCC1CC(OC(=O)C(CO)c1ccccc1)C2
b. CC(C)(C)NCC(O)COc1cccc2c1C[C@H](O)[C@H](O)C2
c. O=C1CCCN1CCCCN1CCN(c2cc(C(F)(F)F)cc(Cl)n2)CC1
d. CC[C@@H](O)C(C[C@@H](C)N(C)C)(c1ccccc1)c1ccccc1
Answer: a, b, c, d
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}