You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 5-amino-N-(4-propan-2-yloxypyridin-3-yl)-2,6,7,11-tetrazatricyclo[7.4.0.03,7]trideca-1,3,5,8-tetraene-4-carboxamide .
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C18H21N7O2
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