Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, or c without using any other words.
Options:
a) CC(C)N=C1SC(=NOC(=O)N(C)SN(C)C(=O)ON=C2SC(=NC(C)C)SC2(C)C)C(C)(C)S1
b) COCCOC(C)OCCOC
c) Ic1ccc(Nc2nnc(CCN3c4ccccc4Sc4ccccc43)s2)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}