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: NC(=O)c1cnccn1
b: CC/C(=C(\c1ccccc1)c1ccc(OCCN(C)C)cc1)c1ccccc1
c: COc1ccc2c(c1)/C(=C/CCN(C)C)c1ccccc1O2
d: CCNC1(c2ccccc2)CCCCC1
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}