Task: Please answer the multiple choice question.
Question: Which molecules are penetrating the blood brain barrier?
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] CCCCN/C(=C1/C=C(Cl)C=CC1=O)c1ccccc1Cl
[c] O=C(O)c1cc(=O)c2ccccc2o1
[d] CN1CCN(c2ccccc2Cc2ccccc2)CC1
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}