The following wee python3 script will "fix" your file for you.
```
fh = open('padron_reducido_ruc.txt', 'r', encoding='8859')
fo = open('padron_reducido_ruc.csv', 'w', encoding='utf8')
c = 0
for line in fh:
row = line.strip(' \r\n').split('|')
while len(row) < 16:
row.append(None)
for idx, item in enumerate(row):
if item.startswith('"'):
row[idx] = '"' + item.strip('"').replace('""','"').replace('"','""') + '"'
elif '"' in item:
row[idx] = item.replace('""','"').replace('"','""')
print('|'.join(row), file=fo)
c += 1
if c % 1000000 == 0:
print(c)
print(c)
fh.close()
fo.close()
```
And yes, fixing the quotes fixes the problem.