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system
What is the molecular formula of the molecule 3-chloro-2-methyl-5-(4-methylsulfonylphenyl)pyrazine;5-chloro-2-methyl-3-(4-methylsulfonylphenyl)pyrazine;3,5-dichloro-2-methylpyrazine;3-methyl-6-(4-methylsulfonylphenyl)-N-(thiophen-2-ylmethyl)pyrazin-2-amine;5-methyl-6-(4-methylsulfonylphenyl)-N-(thiophen-2-ylmethyl)pyrazin-2-amine ?
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C63H60Cl4N12O8S6
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