You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named methyl-methylidene-[(2-methylpropan-2-yl)oxy]-(1-propan-2-yltriazol-4-yl)-lambda5-phosphane by IUPAC nomenclature, provide its molecular formula.
user
C11H22N3OP
assistant