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 O=C(CSc1nc2nc(-c3cccs3)cc(C(F)(F)F)c2c(=O)[nH]1)Nc1ccc(F)c(F)c1
b O=S(=O)(c1cccs1)N1CCN(c2ccnc3cc(Cl)ccc23)CC1
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}