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, c, or d without using any other words.
Options:
a. N#Cc1cc(-c2ccccc2)nnc1NCCN1CCOCC1
b. CN1CC[C@]23c4c5ccc(O)c4O[C@H]2C(O)C=C[C@H]3[C@H]1C5
c. CC[C@@H](O)C(C[C@@H](C)N(C)C)(c1ccccc1)c1ccccc1
d. CC(C)(C)NCC(O)COc1cccc2c1CCC(=O)N2
Answer: 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}