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 other words.
Options:
(a) C=CCN1CCC23c4c5ccc(OC(C)=O)c4OC2C(OC(C)=O)C=CC3C1C5
(b) CC(C)CC(N(C)C)C1(c2ccc(Cl)cc2)CCC1
(c) CN1CCN(/C=C2\N=C3CN=C(c4ccccc4Cl)c4cc([N+](=O)[O-])ccc4N3C2=O)CC1
(d) CN(C)CCCN1c2ccccc2CCc2ccc(Cl)cc21
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}