christmas tree made of benzene methyl group molecule formula icons

christmas concept tree spruce csimple icon button elements silhouette icons sign symbol graphic element pictogram logo fir 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 branch pattern plant lighting design flower font twig line art leaf