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] CCN(CC)CCn1cnc2c1c(=O)n(C)c(=O)n2C
[b] CN1CCN(C2=Cc3cc(Cl)ccc3/C(=C\C#N)c3ccccc32)CC1
[c] O=[N+]([O-])C1=CC=NC1NCCSCc1ccccn1
[d] O=C1OCCC1C1(O)CCN(CCCN2c3ccccc3Sc3ccc(Cl)cc32)CC1
[e] O=C(NCCCN1CCOCC1)c1ccc(Cl)cc1
Answer: a, b, c, d, 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}