Task: Please answer the multiple choice question.
Question: Which molecules are not 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 Clc1ccccc1C(c1ccccc1)(c1ccccc1)n1ccnc1
b CNC1CCN2c3ccccc3CCc3cccc1c32
c C=CCN1C(=O)C(CC(C)C)NC1=S
d CNC/C=C(/c1ccc(Br)cc1)c1cccnc1
Answer: a
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}