Definition: Translate the given Spanish text to English

Positive Example 1 -
Input: A method for converting a series of m-bit information words to a modulated signal is described.
Output: Se describe un método para convertir una serie de palabras de informacion de bits m a una señal modulada.

Positive Example 2 -
Input: A last plastic cover is applied as a final protection.
Output: La presente invencion comprende un nuevo mezclador termocinetico.

Negative Example 1 -
Input: Luminescent optical sensor.
Output: SENSOR OPTICO LUMINISCENTE.

Negative Example 2 -
Input: The urinal is similar to a common toilet.
Output: El común es similar a un inodoro orinal.

Now complete the following example -
Input: ; the ring A represents a carbon ring or a heterocycle; R1 represents alkyl, alkenyl, alkynyl, NR4R5, OR6, etc.
Output: ; el anillo A es un anillo carbociclico, un anillo heterociclico; R1 es alquilo, alquenilo, alquinilo, NR4R5, OR6, etc.