Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) O=C(Nc1ccn(Cc2c(F)c(F)cc(F)c2F)n1)c1ccc(COc2ccc(Cl)cc2Cl)o1
(b) CN(C)CCN(C(=O)C1=COCCO1)c1nc2ccc(Cl)cc2s1.Cl
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}