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) CN(C)C(=O)Oc1ccc[n+](C)c1.[Br-]
(b) CC1=NN(c2ccccc2)C(=O)C1
(c) CN1CCN(CC/C=C2\c3ccccc3Sc3ccc(S(=O)(=O)N(C)C)cc32)CC1
(d) O=C1CN=C(C2=CCCCC2)c2cc(Cl)ccc2N1
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}