In English aspiration is entirely conditioned by the phonetic context. Only voiceless stops (/p/,/t/,/k/) are aspirated, and these are only aspirated when they occur a) alone (that is, not as part of a consonant cluster) b before a stressed vowel.
Neither of these requirements is met in the name of our new Grand Orange: the /p/ occurs in the consonant cluster /mp/, and it occurs at the end of the syllable. Consequently, it's not aspirated.
In fact, in many contexts—at the end of a sentence, or even when a following stressed syllable begins with a vowel (e.g. "Trump oughta [whatever you want him to do]), which should cause the /p/ to act as the syllable onset—the /p/ won't be discernibly 'pronounced' at all: the /m/ has already effected its defining lip closure, and the glottal closure which accompanies stops for many speakers is likely to completely mask its release. But that doesn't matter: the closure will signal to any listeners that there should be a /p/ there, and that's what they will 'hear'.