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] CC1=NN(c2ccccc2)C(=O)C1
[b] c1ccc(-c2nc(N3CCNCC3)cc3ccccc23)cc1
[c] COc1ccc2c(c1)c(CC(=O)O)c(C)n2C(=O)c1ccc(Cl)cc1
[d] CN(C)C/C=C(/c1ccc(Br)cc1)c1cccnc1
Answer: 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}