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 CN1CCN(c2nc(-c3ccncc3)nc3ccccc23)CC1
b NC(=O)N/N=C/c1ccc2cccc(OCc3ccccc3)c2n1
c CCCCOC(=O)Nc1nc2ccc(OC)cc2s1
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}