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) Cn1c(=O)c2c(ncn2C)n(C)c1=O
(b) O=[N+]([O-])C1=CC=NC1NCCSCc1ccccn1
(c) CN(C)CC(O)C(c1ccccc1)c1ccc(Cl)cc1
(d) N#Cc1ccc2c(c1)C1=C(CCN(CC3CCCC3)CC1)c1ccccc1O2
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}