Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: O=C(NC1CCN(Cc2ccc3oc(=O)oc3c2)CC1)c1cc(=O)c2ccc(F)cc2o1
b: Cc1nccn1C1=NCCC(N2CCC(CCNS(N)(=O)=O)CC2)=N1
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
2-(2-methylimidazol-1-yl)-6-[4-[2-(sulfamoylamino)ethyl]piperidin-1-yl]-4,5-dihydropyrimidine