You've probably heard of benzene rings; they're very carcinogenic. And it goes all the way over to these big, thick, galumphy ones that have hundreds of carbons, and they have thousands of hydrogens, and they have vanadium and heavy metals and sulfur and all kinds of craziness hanging off the sides of them.
Probablemente han escuchado de los anillos de benceno; son cancerígenos. y van desde estos grandes, gruesos y torpes que tienen cientos de carbonos, tienen miles de hidrógenos, tienen vanadio, metales pesados, sulfuro y todo tipo de cosas colgando a sus lados.