Task: Please answer the multiple choice question.
Question: Which molecules are a 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(NCc1ccc(Cl)cc1)C1CCN(S(=O)(=O)c2cc([N+](=O)[O-])ccc2Cl)CC1
b CN1CCN(S(=O)(=O)c2ccc(N)cc2)CC1
c CCC(C)C(NC(=O)c1ccc(Cl)cc1Cl)C(=O)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}