15938-36-0 AI3-27468 Acetylmethylcarbamic acid 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester BAY 78537 Carbamic acid, acetylmethyl-, 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester N-Acetylcarbofuran