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. CCOC(=O)c1c(CN2CCOCC2)nc(-c2nccs2)nc1-c1ccc(F)cc1Br
b. O=C1N(CCN2Cc3ccccc3C2)CCN1Cc1cccc(C(F)(F)F)c1
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}
ethyl 4-(2-bromo-4-fluorophenyl)-6-(morpholin-4-ylmethyl)-2-(1,3-thiazol-2-yl)pyrimidine-5-carboxylate