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, d, or e without using any additional words.
Options:
a COc1cc2c3c(c1O)C1(C=CC(=O)C=C1)CC3N(C)CC2
b CC(C)(C)NCC(O)COc1cccc2c1C[C@H](O)[C@H](O)C2
c COc1ccc([C@@H]2Sc3ccccc3N(CCN(C)C)C(=O)[C@@H]2OC(C)=O)cc1
d CCC(OC(C)=O)C(CC(C)N(C)C)(c1ccccc1)c1ccccc1
e CCC(=O)N(c1ccccc1)C1(COC)CCN(CCc2cccs2)CC1
Answer: a, b, c, d, e
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}