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 or b without using any additional words.
Options:
a. Cc1cc(C)c(S(=O)(=O)NCC2CCC(C(=O)NCCCN3CCC(C)CC3)CC2)c(C)c1
b. CN(C)/N=C/c1ccc(Sc2ccc([N+](=O)[O-])cc2[N+](=O)[O-])o1
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}