[{"from": "human", "value": "Provide a description of this molecule. [C][/C][=C][Branch1][C][\\C][/C][=C][C][=Branch1][N][=C][Branch1][Branch2][C][=Branch1][C][=O][O][Ring1][#Branch1][C][O][C]"}, {"from": "gpt", "value": "The molecule is a member of the class of nectriapyrones that is pyran-2-one which is substituted at positions 3, 4, and 6 by methyl, methoxy, and but-2-en-2-yl groups, respectively in which the butenyl substituent has E configuration. A fungal metabolite that has been induced in the rice blast fungus Pyricularia oryzae by overexpression of a polyketide synthase gene (NEC1) and an O-methyltransferase gene (NEC2). It has a role as a fungal metabolite. It is functionally related to a desmethylnectriapyrone."}]