Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a) CN1CCCC1c1cccnc1
b) O=P(OCCCl)(OCCCl)OC1CC(C(Br)CBr)CCC1Cl
c) CCOC(=O)N(C)C(=O)CSP(=S)(OCC)OCC
d) O=S(=O)(Oc1ccc(Cl)cc1)c1ccc(Cl)cc1
Answer: b
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}