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, b, c, or d without using any other words.
Options:
a Cc1nc2sc(C(c3cccs3)N3CCN(Cc4ccccc4)CC3)c(O)n2n1
b Cl.Cn1nnnc1SCCNCc1ccccc1OCc1ccccc1Cl
c Cc1nc(CS(=O)c2ccc(Cl)cc2)cc(NCc2ccc(Cl)cc2Cl)n1
d COc1ccc(Cc2nnc(SCC(=O)Nc3c(C)cccc3C)[nH]c2=O)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}