11-(2-Methylaminoethyl)-11H-dibenz(b,f)-1,4-oxathiepin hydrogen oxalate 11H-DIBENZ(b,f)-1,4-OXATHIEPIN-11-ETHANAMINE, N-METHYL-, ETHANEDIOATE 82387-09-5 N-Methyl-11H-dibenz(b,f)-1,4-oxathiepin-11-ethanamine ethanedioate