Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) O=C(O)C(=O)O.Oc1ccccc1CN1CCC(C(O)(c2ccccc2)c2ccccc2)CC1
(b) COc1ccc(C2C(C#N)=C(C)NC3=C2C(=O)c2ccccc23)cc1
(c) CN(C(=O)C1CCCCC1)C1CCS(=O)(=O)C1
(d) O=C1/C(=C/c2ccncc2)SC(=S)N1Nc1ccccc1
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}