1H-Pyrrole-3-carboxamide, 2-(((diethylamino)acetyl)amino)-4-methyl-5-(phenylmethyl)-, monohydrochloride 2-(Diethylaminoacetamido)-3-carbamyl-4-methyl-benzylpyrrole 72406-72-5 Benzylcarbamyllidocaine Benzylcarbamyllidocaine analog