How to change a field name and add a tag using processors (using snmp plugin)

Telegraf
1

Hello. How can I convert (ostensibly using processors) the snmp input configuration snippet below so that the output shows up not as 3 fields but as a single field (upsOutputPercentLoad) with 3 tags (A,B,C)?

[[inputs.snmp.field]]
 name = "upsOutputPercentLoadA"
 oid = "1.3.6.1.2.1.33.1.4.4.1.5.1"
[[inputs.snmp.field]]
 name = "upsOutputPercentLoadB"
 oid = "1.3.6.1.2.1.33.1.4.4.1.5.2"
[[inputs.snmp.field]]
 name = "upsOutputPercentLoadC"
 oid = "1.3.6.1.2.1.33.1.4.4.1.5.3"