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structural formula for butane
structural formula of butyne
structural formula for butene
structural formula for butanol
structural formula for butanoic acid
structural formula for butan-2-ol
structural formula for ethane
condensed structural formula of butane
complete structural formula of butane
expanded structural formula of butane
structural formula for butane, structural formula of butyne, structural formula for butene, structural formula for butanol, structural formula for butanoic acid, structural formula for butan-2-ol, structural formula for ethane, condensed structural formula of butane, complete structural formula of butane, expanded structural formula of butane
