The lowercase characters are using a specific range of letters. Using Rot 13 reveals roman numerals
cxciImmmmmmmmmlxZlEmmmmmmmmccxHBmmmmcxcSlxxiGlxxUxlTxliVcmxviiRRcciAcmviiVAclxxxGxliiPxNxliRxxxEliKivVcciFlxxExlHlxxxBlxSlxxiDFxciiNcxvii
Split at capital letters and convert roman numerals to numbers
cxci |
191 |
mmmmmmmmmlx |
9060 |
l |
50 |
mmmmmmmmccx |
8210 |
mmmmcxc |
4190 |
lxxi |
71 |
lxx |
70 |
xl |
40 |
xli |
41 |
cmxvii |
917 |
cci |
201 |
cmvii |
907 |
clxxx |
180 |
xlii |
42 |
x |
10 |
xli |
41 |
xxx |
30 |
li |
51 |
iv |
4 |
cci |
201 |
lxx |
70 |
xl |
40 |
lxxx |
80 |
lx |
60 |
lxxi |
71 |
xcii |
92 |
cxvii |
117 |
Group the results
191906050821041907170404191720190718042104130514201704080607192117
Make pairs
19 19 06 05 08 21 04 19 07 17 04 04 19 17 20 19 07 18 04 21 04 13 05 14 20 17 04 08 06 07 19 21 17
Convert numbers to letters using a=0
TTGFIVETHREETRUTHSEVENFOUREIGHTVR
ttg53truth748vr
Isolate capital letters
VMRUOFTGIEENINTCAERXISRUOFQSA
Reverse
ASQFOURSIXREACTNINEEIGTFOURMV
asq46react984mv