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 COc1ccccc1NC(=O)C(C)OC(=O)c1ccc(-n2cnnn2)cc1
b COc1ccc(CNC(=O)COC(=O)c2ccc(Br)cc2)cc1
c Cc1nn(-c2ccccc2)c(C)c1NC(=O)COC(=O)c1ccc(O)cc1O
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}