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, d, or e without using any other words.
Options:
a: NC(N)=NC(=O)c1nc(Cl)c(N)nc1N
b: CN(C)CCOC(c1ccccc1)c1ccc(Br)cc1
c: CNCCCN1c2ccccc2CCc2ccccc21
d: NCCCN1c2ccccc2CCc2ccccc21
e: CCCCCC(N)C(O)(c1ccccc1)c1ccccc1
Answer: a, b, c, d, e
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}