gift made of benzene methyl group molecule formula icons

christmas concept box gift csimple icon button elements silhouette icons sign symbol graphic element pictogram logo merry new year xmas vector celebration festive illustration holiday toluene oxylene metaxylene orthoxylene aromatic hydrocarbon paraxylene mxylene pxylene isomer xylenes dimethylbenzene molecule formula chemical skeletal atomic hand drawn structural model chemistry biochemistry molecular shape made benzene methyl group symbols greeting card font text line brand drawing diagram pattern cartoon design circle sketch presentation document organ label advertising calligraphy number