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 additional words.
Options:
(a) c1ccc2c(N3CCCC3)nc(-c3ccncc3)nc2c1
(b) CCC/C=N/NC(=O)c1cccc(Br)c1
(c) CCCCCCC(c1c(C)n(C)n(-c2ccccc2)c1=O)c1c(C)n(C)n(-c2ccccc2)c1=O
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}