Attachment: FORM 8-K

otra-20220516.xsd
Attachment: XBRL TAXONOMY EXTENSION SCHEMA

otra-20220516_def.xml
Attachment: XBRL TAXONOMY EXTENSION DEFINITION LINKBASE

otra-20220516_lab.xml
Attachment: XBRL TAXONOMY EXTENSION LABEL LINKBASE

otra-20220516_pre.xml
Attachment: XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE