Task: Please answer the multiple choice question.
Question: Which molecules are not 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) CN1/C(=C(\O)Nc2ccccn2)C(=O)c2sccc2S1(=O)=O
(b) CN1CCN(C(=O)OC2C3=C(SCCS3)C(=O)N2c2ccc3ccc(Cl)nc3n2)CC1
(c) CN(C(=O)CNC1CC1)c1ccc(Cl)cc1C(=O)c1ccccc1Cl
(d) Clc1ccc2c(c1)/C(=C/C1CN3CCC1CC3)c1ccccc1S2
Answer: a
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}