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.) Cn1c(=O)[nH]c2ncn(C)c2c1=O
b.) NC(=O)c1ccc(F)c2c1C[C@@H](N(C1CCC1)C1CCC1)CO2
c.) CCN(CC)c1ccc(NC(=O)c2ccccc2N)c(C)c1
d.) CN(C)CCC=C1c2ccccc2Sc2ccccc21
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}