späteres
Späteres is a form of the German adjective spät, used attributively before a neuter noun to express “a later [something]” or “the later one.” It is not a standalone noun but a specific inflected form of the comparative adjective.
Because it is the neuter singular form before an indefinite article or determiner, the ending is -es:
Etymology and grammar: spä(t) is the stem meaning late, and -er is the comparative suffix. The neuter
Usage notes: Späteres tends to appear in contexts that require a precise, attributive modifier before a neuter