SMILES: CC[C@@H]1[C@@]([C@@H]([C@H](C(=O)[C@@H](C[C@@]([C@@H]([C@H]([C@@H]([C@H](C(=O)O1)C)O[C@H]2C[C@@]([C@H]([C@@H](O2)C)O)(C)OC)C)O[C@H]3[C@@H]([C@H](C[C@H](O3)C)N(C)[14CH3])O)(C)O)C)C)O)(C)O
Description: The molecule is a (14)C-modified compound that is erythromycin A in which one of the methyl groups of the dimethylnitrilo group has a (14)C label. It is used in a breath test to detect liver cytochrome P450 enzyme (CYP3A4) activity in humans. It has a role as a probe. It is an erythromycin, a cyclic ketone and a (14)C-modified compound.