Task: Please answer the multiple choice question.
Question: Which molecules are 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 additional words.
Options:
(a) CN(C)CCCN1c2ccccc2C=Cc2sccc21
(b) CC(=O)OCC(=O)[C@@]12OC(C)(C)O[C@@H]1C[C@H]1C3CC(C#N)=C4C=C(OCCCl)CCC4(C)[C@@]3(F)C(O)CC12C
(c) CCOC(=O)c1ncn2c1CN(C)C(=O)c1cc(F)ccc1-2
(d) FC(F)(F)c1cccc(C2=CCN(CCc3ccc4ccccc4c3)CC2)c1
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}