looks like the transaction already confirmed so no you cannot cancel a confirmed transaction
is this the LTC address you sent it to? : 34dAQXdxGavxPyM5CdJRHfaatzVSoedikd
blockcypher says that transaction created two outputs one of 19 LTC to 34dAQXdxGavxPyM5CdJRHfaatzVSoedikd which is currently unspent at posting time...I am assuming this is the multisig address your talking about....do you have the private key for it?
the other output is 24.77...to this address: LL4evPe4SydyatZPUEWZGo1hG1MRRWCQAn which is spent already...
LTC to BTC shouldn't confirm but if it did then you need to try importing the address with the unspent output to your wallet using your private key for that multisig address
also you may be able to recover them using python wallet but only if you have the private key to the multisig address with the unspent output