Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, or c without using any other words.
Options:
(a) CCP(=S)(OC)SCSCSP(=S)(CC)OC
(b) CCOP(=O)(SCC)SCC
(c) O=C(O)CCC(=O)Nc1ccc(NS(=O)(=O)c2ccc([N+](=O)[O-])cc2)cc1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}