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 other words.
Options:
a. Cc1nnc2n1-c1sc(Br)cc1C(c1ccccc1Cl)=NC2
b. CC(=O)OCC1=C(C(=O)O)N2C(=O)[C@@H](NC(=O)c3c(-c4ccccc4Cl)noc3C)[C@H]2SC1
c. O=C1NCCN1CCN1CCC(c2cn(-c3ccc(F)cc3)c3ccc(Cl)cc23)CC1
d. Nc1nc(N)c2nc(-c3ccccc3)c(N)nc2n1
Answer: a, 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}