Line profiles of identified species (in black) and single Gaussian fits (in blue) toward the continuum substructures identified in this paper(given in Table 1). Continuum is not subtracted in IRS1. Two red vertical lines in each panel mark the velocity range we use to integrate the intensity and obtain the spatial distribution maps (Fig. 3). Lines marked with “**” has >4σ detection but could not be fitted with a singleGaussian. “∇∇” denotes the lines having >4σ detection butshowing obvious absorption in IRS1-mmS or obvious emission in IRS1-peak.