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. O=C(Nc1nc2cc3c(cc2s1)OCCO3)c1cccc(N2C(=O)CCC2=O)c1
b. O=C(NCc1ccco1)/C(=C/c1ccc([N+](=O)[O-])cc1)NC(=O)c1ccco1
c. Cc1ccccc1S(=O)(=O)Cc1ccc(C(=O)NCc2cccs2)o1
Answer: b
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}