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. CCC(C)c1ccc(NC(=S)NC2CCN(Cc3ccccc3)CC2)cc1
b. N=c1c(S(=O)(=O)c2ccc(Br)cc2)cc2c(=O)n3ccccc3nc2n1C1CCCCC1
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}