Translate the given Spanish text to English

Input: Consider Input: The gel is substantially free of biocides.

Output: El gel está sustancialmente libre de biocidas.


Input: Consider Input: The invention relates to compounds of formula (I) and pharmaceutically acceptable salts, solvates, and prodrugs thereof, and to their use as cholesterol absorption inhibitors for the treatment of hyperlipidaemia.

Output: La invencion se refiere a compuestos de formula (I) y sus sales, solvatos y profarmacos farmaceuticamente aceptables, y a su uso como inhibidores de la absorcion del colesterol para el tratamiento de la hiperlipidemia.


Input: Consider Input: The invention relates to a navigation systems and elements.


Output: La invención se refiere a sistemas y elementos de navegación.