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 other words.
Options:
a: CCN(CC(=O)Nc1c(F)cccc1F)C(=O)c1ccc2c(c1)NC(=O)C(C)S2
b: CCO[C@@H]1OC(C(=O)NCc2nc3ccccc3[nH]2)=C[C@H](c2cn(C(C)=O)c3ccccc23)[C@H]1CCCO
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}