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] CCC(O)C(CC(C)N(C)C)(c1ccccc1)c1ccccc1
[b] COc1ccc2c(c1)c(CC(=O)O)c(C)n2C(=O)c1ccc(Cl)cc1
[c] CN1/C(=C(\O)Nc2ccccn2)C(=O)c2sccc2S1(=O)=O
[d] C[N+]1([O-])C2CCC1CC(OC(=O)C(CO)c1ccccc1)C2
Answer: a, b, 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}