Chemical structure card is easier to read

Small molecules like nitrogen used to render as a tiny mark in a huge grey square, and the "Also known as" text next to it could get cut off - both fixed, and a separate case (compounds PubChem draws as scattered atom labels, like molecular sieves) keeps its original legible size instead of being zoomed into illegible specks. The synonyms list itself is now bullet points, one name per line, instead of one long comma-separated line.