Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: COc1ccc2ncc(F)c(CCN3CCC(NCc4ccc5c(n4)NC(=O)CO5)CC3)c2n1
b: O=c1ccc(-c2cnc3nc(N4CCC(N5CCCCC5)CC4)sc3c2)c[nH]1
Answer: a
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}
6-[[[1-[2-(3-fluoro-6-methoxy-1,5-naphthyridin-4-yl)ethyl]piperidin-4-yl]amino]methyl]-4H-pyrido[3,2-b][1,4]oxazin-3-one