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, or c without using any other words.
Options:
a. CCOC(=O)C1CCCN(c2c(N3CCN(c4ccccn4)CC3)c(=O)c2=O)C1
b. Cc1ccc(S(=O)(=O)N(C(=O)c2ccncc2)c2ccc(OC(=O)c3ccncc3)cc2)c(C)c1
c. O=Cc1ccc(C(=O)O)cc1
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}