3d image of limonene skeletal formula

dipentene limonene aliphatic hydrocarbon cyclic monoterpene oil citrus fruit peel allergy terpene enantiomer orange lemon chiral extraction plant hazard toxicity cancer effect cosmetics carcinogen supplement solvent biofuel 3d chemical molecule molecular structural structure formula skeletal geometry reagent functional group reaction herbal phytochemicals biosynthesis synthesis mechanism pathway odor smell