I need to create a reaction scheme where a single molecule is hit by light generating 2 states each evolving to one state(refer to picture) Since merge don't work in reverse (connect one molecule to 2 )
\documentclass[12pt]{article}
\usepackage[italian]{babel}
\usepackage{floatrow}
\usepackage{wrapfig}
\usepackage{hyperref}
\usepackage{etoolbox}
\usepackage{cmbright}
\usepackage{geometry}
\usepackage{tikz}
\usepackage{amsmath}
\usepackage{chemfig}
\usepackage{graphicx}
\usepackage{imakeidx}
\makeindex
\usepackage[colorlinks=true, allcolors=blue]{hyperref}
\usepackage{pict2e}
\usepackage{float}
\usetikzlibrary{positioning, calc, arrows.meta}
\begin{document}
\begin{figure}
\schemestart
\chemfig{R_1-[:40](=[:90]O)-[:-40]R_2}
\arrow[->]{$h\nu$}
\chemleft[\chemfig{R_1-[:40](=[:90]O)-[:-40]R_2}\chemright{]^{S_1}}\arrow{->[ISC]}[-90] \chemleft[\chemfig{R_1-[:40](=[:90]O)-[:-40]R_2}\chemright{]^{T_1}} \merge(c1)(c2)--()\chemfig{R_1-[:40]\Charge{[.radius=1.5pt,.style={draw=gray}] 0 =\.[{.style={draw=none,fill=black}}]}{C} =[:90]O} \+ \Charge{[.radius=1.5pt,.style={draw=gray}]
180 =\.[{.style={draw=none,fill=black}}]}{R_2}
\schemestop
\caption{ My Caption}
\end{figure}
\end{document}
Also how to align the last 2 molecules, the one on the right with dots.