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) Nc1ccccc1C(=O)NCCCN1CCN(c2cccc(Cl)c2)CC1
b) O=C(NCCCn1ccnc1)C1CCCN(S(=O)(=O)c2ccc(F)cc2)C1
c) CC(=O)N1CC(C)Sc2ccc(S(=O)(=O)NC(C)c3ccccc3)cc21
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}