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 O=C(CSC1CS(=O)(=O)c2cc([N+](=O)[O-])ccc21)NNC(=O)c1ccc(Cl)cc1
b CC(=O)c1cccc(CN2CCN(CC=C(C)C)C(CCO)C2)c1
c COC(=O)c1cccn(CC(=O)c2ccc(Cl)cc2Cl)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}