Task: Please answer the multiple choice question.
Question: Which molecules are penetrating the blood brain barrier to reach the brain?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a Cn1cnc2c1c(=O)[nH]c(=O)n2C
b CC(=O)NNC(=O)CC(O)(c1ccccc1)c1ccccc1
c CCOC1c2ccccc2C(=O)N(C)c2ccccc21
d CN(C(=O)Cc1ccccc1N)[C@@H](CN1CC[C@@H](O)C1)c1ccccc1
Answer: a, b, c
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}