Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
If you are working in a mature, "big name" tool from a
foundry that does good PDKs, the parasitics extraction
should cough up a capacitor for this structure and you
could dig for it in the analog_extracted (or whatever, if
it's not Brand C) view by select-by-net or selecting the
instance by area. If you put probes on both nets then
which of the many pcapacitor instances is the right one
will be visually obvious.