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. C[N+]1(C)CCC(OC(=O)C(O)(c2ccccc2)C2CCCC2)C1.[Br-]
b. O=C(O)c1cc(=O)c2cc(OCC(O)COc3cccc4oc(C(=O)O)cc(=O)c34)ccc2o1
c. CNC1Cc2ccccc2N(C)c2ccccc21
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}