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 additional words.
Options:
a: O=C1CCCN1CCCCN1CCN(c2cc(C(F)(F)F)cc(Cl)n2)CC1
b: OCCN1CCN([C@@H]2C[C@@H](c3ccc(F)cc3)c3ccc(C(F)(F)F)cc32)CC1
c: C/C=C\C1O[C@]2(C(=O)COC(=O)c3ccncc3)CC[C@@]3(O1)[C@@H]1CCC4=CC(=O)CC[C@]4(C)[C@H]1[C@@H](O)C[C@]23C
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}