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 other words.
Options:
a Cc1nc2n(n1)C(N1CCN(C)CC1)=Nc1ccccc1C2
b CC[C@@]1(O)C[C@H](OC2CC(N(C)C)C(OC3CC(O)C(OC4CCC(=O)C(C)O4)C(C)O3)C(C)O2)c2c(cc3c(c2O)C(=O)c2c(O)cccc2C3=O)[C@H]1C(=O)OC
c CN1C2CCC1CC(OC(=O)[C@H](CO)c1ccccc1)C2
d CN(C(=O)CNC1CC1)c1ccc(Cl)cc1C(=O)c1ccccc1Cl
e Cc1cccc(C)c1NC(=O)c1ccc(N)cc1
Answer: a, 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}