8-溴-7-(2-丁炔-1-基)-3,7-二氢-3-甲基-1-[(4-甲基-2-喹唑啉基)甲基]-1H-嘌呤-2,6-二酮

1-[(4-methylquinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-bromoxanthine ·