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 other words.
Options:
a.) CCC(=O)C(CCN(C)C)(c1ccccc1)c1ccccc1
b.) CN1C2CCC1CC(OC(=O)C(C)(CO)c1ccccc1)C2
c.) O=c1[nH]oc2c1CCNC2
d.) CN1C2CCC1CC(OC(=O)C(CO)c1ccccc1)C2
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}