This is an "Aqua Mirabillis" type formula, very similar in fragrance to the classic Eau de Cologne. In case all the bad predicaments prove true, and there will be no citrus to be found in commercial perfumes, this might work as a DIY substitute for 4711.

Classical Eau de Cologne

Base notes:
20 drops Benzoin
4 drops sandalwood

Heart notes:
10 drops Neroli
6 drops Litsea Cubeba

Top notes:
2 drops Rosemary
4 drops Lavender
4 drops Petitgrain Bigarade
20 drops Bergamot
10 drops Lemon
8 drops Grapefruit

Measure the oils drop by drop into a glass bottle filled with 50ml 200 proof grain alcohol (at least 94% alcohol in volume) or denatured alcohol (perfumer's alcohol). Let it mature for 30 days and than apply as desired.

Warning: Do not copy what the man in the photo is doing! This is really NOT meant for drinking...