Task: Please answer the multiple choice question.
Question: Which molecules are not 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. CCN(CC)CCNC(=O)Cc1nn(CC)c(=O)c2ccccc12.Cl
b. Cc1ccc(-c2nn(-c3ccc(F)cc3)cc2C(=O)N2CCN(C3CCS(=O)(=O)C3)CC2)cc1
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}