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 additional words.
Options:
a: CN(C(=O)Cc1ccc(Cl)c(Cl)c1)[C@@H](CN1CCCC1)c1ccccc1
b: CCC(=O)N(c1ccccc1)C1(COC)CCN(CCc2cccs2)CC1
c: CCN(CC)CCn1cnc2c1c(=O)n(C)c(=O)n2C
d: CNCCCC1(C)CN(c2ccccc2)c2ccccc21
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}