Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. COc1cnc2ccc(=O)n(CCN3CCC(NCc4cnc(OC)c(C#N)c4)CC3)c2c1
b. O=C1OC2(CCC(c3nc4ccc(OC(F)(F)F)cc4[nH]3)CC2)CN1c1ccc(F)cc1
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}
2-methoxy-5-[[[1-[2-(7-methoxy-2-oxo-1,5-naphthyridin-1-yl)ethyl]piperidin-4-yl]amino]methyl]pyridine-3-carbonitrile