No definitions found for 'C3'
Perhaps one of these:
c4,
-n3,
ci,
c3i,
co,
t3,
cy,
ck,
cs,
c#,
ct,
cl-,
ac3,
cb,
o3,
c,
cg,
c*,
cd,
cp,
cm,
cn,
cx,
cr,
e3,
ch3,
cu,
ch,
ca,
j3,
cc,
s3,
-cn,
m3,
cf,
cz,
oc3,
cv,
cl,
ce,
3