7-MAC;7-ACA-3-MTT-7-MO;7-MAC OR 7-AMAC(INTERMEDIATE OF CEFMINOX);7β-Amino-7-methoxy-3-[(1-methyl-1H-tetrazol-5-yl-thio)methyl]-3-cephem-4-diphenyl methyl carboxylate;7beta-Amino-7alfa-methoxy-3-{[(1-methyl-1H-tetrazol-5-yl)thio]-3-cephem-4-carboxylate} D