Task: Please answer the multiple choice question.
Question: Which molecules are not penetrating the blood brain barrier to reach the brain?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a) Nc1nc(=S)c2[nH]cnc2[nH]1
b) CCC(OC(C)=O)C(CC(C)N(C)C)(c1ccccc1)c1ccccc1
c) CO[C@@]1(NC(=O)C2SC(=C(C(N)=O)C(=O)O)S2)C(=O)N2C(C(=O)O)=C(CSc3nnnn3C)CS[C@@H]21
Answer: a, 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}