Are "entuple" and "detuple" appropriate words for what I want to do?

I’m designing an API where instances of my template include among others, the following 2 operations:

#define ENTUPLE(a,b,c) ((mytype){ .member_a = (a), .member_b = (b), .member_c = (c), })

which takes an argument list and creates an object value. The other operation does the opposite, takes the object and expand it into an argument list:

#define DETUPLE(obj) (obj).member_a, (obj).member_b, (obj).member_c

My questions are: are "entuple" and "detuple" the best words that describes the purpose of of these macros? Are there better existing words for describing those operations?

note the API langauge is C, I took the "tuple" concept from Python.