The first letter (C) comes from 1D which may be wrong.
1D Is it up like Sep. (to Apr.) (5) - for which I have TISIC, derived from IS IT going up followed by C (circa = approximately = like).
Chambers defines TISICK as a cough, but has no definition for TISIC. However Wicktionary does:
https://en.wiktionary.org/wiki/tisic
The L comes from ANGELIC which is definitely correct.