Task: Please answer the multiple choice question.
Question: Which molecules are penetrating the blood brain barrier?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: CN1C(=O)NC(=O)C(C)(C2=CCCCC2)C1=O
b: Clc1ccc2c(c1)/C(=C/C1CN3CCC1CC3)c1ccccc1S2
c: O=C(Cn1cnnn1)N[C@@H]1C(=O)N2C(C(=O)O)=C(CSc3nncs3)CS[C@H]12
Answer: a, b
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}