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, c, or d without using any additional words.
Options:
a. COc1ccc2c(C3CCN(CCCC(=O)c4ccc(F)cc4)CC3)c(C)[nH]c2c1
b. C[C@H]1c2ccccc2[C@@H](CCCN(C)C)c2cc(C(F)(F)F)ccc21
c. CCN(CC)CCOC(=O)C(O)(c1ccccc1)c1ccccc1.[Cl-].[H+]
d. CN1CC[C@]23c4c5ccc(O)c4O[C@H]2C(O)C=C[C@H]3[C@H]1C5
Answer: a, b, c, 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}