Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a Fc1ccc(NC(=S)NC2CC3CCCC(C2)N3Cc2cccs2)cc1
b O=S(=O)(Nc1nc2ccccc2s1)c1ccc(Cl)s1
c O=C(c1cccc(Br)c1)N1CCN(C(=O)c2cccc(Br)c2)CC1
d Cc1cccc(Nc2nc3c(S(=O)(=O)c4ccccc4)nnn3c3ccccc23)c1C
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_inhib%}
Answer: {%multiple_choice_result}