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, d, or e without using any other words.
Options:
[a] CCC1(c2ccccc2)C(=O)NCNC1=O
[b] Cc1ccc(Cc2ccccc2)c(N2CCNCC2)c1
[c] CN(C(=O)Cc1ccccc1N)[C@@H](CN1CC[C@@H](O)C1)c1ccccc1
[d] Cn1c(=O)c2[nH]cnc2n(C)c1=O
[e] CC1CCCC1
Answer: a, b, e
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}