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 other words.
Options:
(a) CN1C2CCC1CC(OC(=O)C(C)(CO)c1ccccc1)C2
(b) CCC(=O)C(c1ccccc1)(c1ccccc1)C(C)CN(C)C
(c) CC(C)[N+]1(C)C2CCC1CC(OC(=O)C(CO)c1ccccc1)C2.[Br-]
(d) CN1C2CCC1CC(OC(=O)[C@H](CO)c1ccccc1)C2
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}